# What is number?

• (noun): A numeral or string of numerals that is used for identification.
Example: "She refused to give them her Social Security number"
Synonyms: identification number

## Number

A number is a mathematical object used to count, label, and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers.

### Some articles on number:

Natural Logarithm - Origin of The Term natural Logarithm
... But mathematically, the number 10 is not particularly significant ... arises from humans’ typical number of fingers ... As an example, there are a number of simple series involving the natural logarithm ...
39 (number) - In Mathematics
39 is the smallest natural number which has three partitions into three parts which all give the same product when multiplied {25, 8, 6}, {24, 10, 5}, {20, 15, 4} ... The thirteenth Perrin number is 39, which comes after 17, 22, 29 (it is the sum of the first two mentioned) ... factor of 392 + 1 = 1522 is 761, which is obviously more than 39 twice, 39 is a Størmer number ...
38 (number)
... This article discusses the number thirty-eight. 38 ← 39 ... → List of numbers — Integers 90 ... → Cardinal thirty-eight Ordinal 38th (thirty-eighth ...
496 (number) - In Mathematics
496 is most notable for being a perfect number, and one of the earliest numbers to be recognized as such ... As a perfect number, it is tied to the Mersenne prime 31, 25 - 1, with 24 ( 25 - 1 ) yielding 496 ... Also related to its being a perfect number, 496 is a harmonic divisor number, since the number of proper divisors of 496 divided by the sum of the reciprocals of its divisors, 1, 2, 4, 8, 16, 31, 62, 124 ...
39 (number) - In Other Fields
... with their first, "'39" does in fact fall in the thirty-ninth position The retired jersey number of former baseball player Roy Campanella The book series "The 39 Clues" revolves around 39 clues hidden ... History The number of signers to the United States Constitution, out of 55 members of the Philadelphia Convention delegates The traditional number ... chat slang for "thank you" when written with numbers (3=san 9=kyu) Pier 39 in San Francisco The number of the French department Jura In Afghanistan ...

### More definitions of "number":

• (noun): A short theatrical performance that is part of a longer program.
Synonyms: act, routine, turn, bit
• (verb): Enumerate.
Example: "We must number the names of the great mathematicians"
Synonyms: list
• (noun): An item of merchandise offered for sale.
Example: "She preferred the black nylon number"; "this sweater is an all-wool number"
• (noun): A clothing measurement.
Example: "A number 13 shoe"
• (noun): A symbol used to represent a number.
Synonyms: numeral
• (verb): Put into a group.
Synonyms: count
• (verb): Give numbers to.
Example: "You should number the pages of the thesis"
• (noun): One of a series published periodically.
Synonyms: issue
• (noun): The grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural).
Example: "In English the subject and the verb must agree in number"
• (verb): Place a limit on the number of.
Synonyms: keep down
• (noun): A concept of quantity derived from zero and units.
Example: "Every number has a unique position in the sequence"
• (noun): The property possessed by a sum or total or indefinite quantity of units or individuals.
Example: "He had a number of chores to do"; "the number of parameters is small"
Synonyms: figure
• (noun): A select company of people.
Example: "I hope to become one of their number before I die"

### Famous quotes containing the word number:

The genius of democracies is seen not only in the great number of new words introduced but even more in the new ideas they express.
Alexis de Tocqueville (1805–1859)

How often should a woman be pregnant? Continually, or hardly ever? Or must there be a certain number of pregnancy anniversaries established by fashion? What do you, at the age of forty-three, have to say on the subject? Is it a fact that the laws of nature, or of the country, or of propriety, have ordained this time of life for sterility?
Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)

The growing good of the world is partly dependent on unhistoric acts; and that things are not so ill with you and me as they might have been, is half owing to the number who lived faithfully a hidden life, and rest in unvisited tombs.
George Eliot [Mary Ann (or Marian)