4090

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 3 (3 unique) factors are:
2
5
409

Its 8 divisors are:
1
2
5
10
409
818
2045
4090
Its aliquote sum is:
3290
makeing it a deficient number.

The number appears at position 656 of the decimal digits of π surrounded by
96091736371787214684409012249534301465495853 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 817.758ms; cpu: 77.5969999999973ms)