In recreational number theory, a narcissistic number (also known as a pluperfect digital invariant (PPDI), an Armstrong number (after Michael F. Armstrong) or a plus perfect number) is a number that is the sum of its own digits each raised to the power of the number of digits. This definition depends on the base b of the number system used, e.g. b = 10 for the decimal system or b = 2 for the binary system.
Read more about Narcissistic Number: Definition, Narcissistic Numbers in Various Bases, Related Concepts
Famous quotes containing the words narcissistic and/or number:
“It is the marketplace that calls most clearly for men to be softer, more narcissistic and receptive, and the new man is the result.”
—Barbara Ehrenreich (b. 1941)
“The serial number of a human specimen is the face, that accidental and unrepeatable combination of features. It reflects neither character nor soul, nor what we call the self. The face is only the serial number of a specimen.”
—Milan Kundera (b. 1929)