397307964 has 24 divisors (see below), whose sum is σ = 927913168. Its totient is φ = 132312960.

The previous prime is 397307959. The next prime is 397307971. The reversal of 397307964 is 469703793.

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, 1417 + ... + 28224.

Almost surely, 2^397307964 is an apocalyptic number.

It is an amenable number.

397307964 is an abundant number, since it is smaller than the sum of its proper divisors (530605204).

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

397307964 is a wasteful number, since it uses less digits than its factorization.

397307964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30765 (or 30763 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 48.

The square root of 397307964 is about 19932.5854820693. The cubic root of 397307964 is about 735.1496534550.

The spelling of 397307964 in words is "three hundred ninety-seven million, three hundred seven thousand, nine hundred sixty-four".