408
408 = 23 × 3 × 17
- Sum of four consecutive primes (97 + 101 + 103 + 107)
- Sum of eight consecutive primes (37 + 41 + 43 + 47 + 53 + 59 + 61 + 67)
- Pell number
- Mertens function returns 0
- Octagonal number
- Untouchable number
- Harshad number
- HTTP status code for "Request Timeout"
- Area code for the Silicon Valley
Read more about this topic: 400 (number), Integers From 401 To 499, 400s