397987160 has 32 divisors (see below), whose sum is σ = 898324560. Its totient is φ = 158687616.

The previous prime is 397987151. The next prime is 397987189. The reversal of 397987160 is 61789793.

It is a junction number, because it is equal to n+sod(n) for n = 397987099 and 397987108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3014 + ... + 28373.

Almost surely, 2^397987160 is an apocalyptic number.

It is an amenable number.

397987160 is an abundant number, since it is smaller than the sum of its proper divisors (500337400).

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

397987160 is a wasteful number, since it uses less digits than its factorization.

397987160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31715 (or 31711 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 397987160 is about 19949.6155351425. The cubic root of 397987160 is about 735.5683265382.

The spelling of 397987160 in words is "three hundred ninety-seven million, nine hundred eighty-seven thousand, one hundred sixty".