397688700984 has 16 divisors (see below), whose sum is σ = 994221752520. Its totient is φ = 132562900320.

The previous prime is 397688700943. The next prime is 397688701021. The reversal of 397688700984 is 489007886793.

It is a congruent number.

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, 8285181247 + ... + 8285181294.

Almost surely, 2^397688700984 is an apocalyptic number.

It is an amenable number.

397688700984 is an abundant number, since it is smaller than the sum of its proper divisors (596533051536).

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

397688700984 is a wasteful number, since it uses less digits than its factorization.

397688700984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16570362550 (or 16570362546 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 69.

The spelling of 397688700984 in words is "three hundred ninety-seven billion, six hundred eighty-eight million, seven hundred thousand, nine hundred eighty-four".