399297780708 has 48 divisors (see below), whose sum is σ = 932786601600. Its totient is φ = 132943394304.

The previous prime is 399297780697. The next prime is 399297780731. The reversal of 399297780708 is 807087792993.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45119068 + ... + 45127916.

It is an arithmetic number, because the mean of its divisors is an integer number (19433054200).

Almost surely, 2^399297780708 is an apocalyptic number.

It is an amenable number.

399297780708 is an abundant number, since it is smaller than the sum of its proper divisors (533488820892).

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

399297780708 is a wasteful number, since it uses less digits than its factorization.

399297780708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12836 (or 12834 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 69.

The spelling of 399297780708 in words is "three hundred ninety-nine billion, two hundred ninety-seven million, seven hundred eighty thousand, seven hundred eight".