399359799808 has 40 divisors (see below), whose sum is σ = 839936441520. Its totient is φ = 189170426880.

The previous prime is 399359799767. The next prime is 399359799829. The reversal of 399359799808 is 808997953993.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20516578 + ... + 20536033.

It is an arithmetic number, because the mean of its divisors is an integer number (20998411038).

Almost surely, 2^399359799808 is an apocalyptic number.

399359799808 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

399359799808 is an abundant number, since it is smaller than the sum of its proper divisors (440576641712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399359799808 is an equidigital number, since it uses as much as digits as its factorization.

399359799808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41052648 (or 41052632 counting only the distinct ones).

The product of its (nonzero) digits is 1190427840, while the sum is 79.

The spelling of 399359799808 in words is "three hundred ninety-nine billion, three hundred fifty-nine million, seven hundred ninety-nine thousand, eight hundred eight".