397611992 has 32 divisors (see below), whose sum is σ = 753166080. Its totient is φ = 196778400.

The previous prime is 397611941. The next prime is 397612001. The reversal of 397611992 is 299116793.

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, 534773 + ... + 535515.

It is an arithmetic number, because the mean of its divisors is an integer number (23536440).

Almost surely, 2^397611992 is an apocalyptic number.

It is an amenable number.

397611992 is a deficient number, since it is larger than the sum of its proper divisors (355554088).

397611992 is a wasteful number, since it uses less digits than its factorization.

397611992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1339 counting only the distinct ones).

The product of its digits is 183708, while the sum is 47.

The square root of 397611992 is about 19940.2104301835. The cubic root of 397611992 is about 735.3371227172.

The spelling of 397611992 in words is "three hundred ninety-seven million, six hundred eleven thousand, nine hundred ninety-two".