397885976 has 24 divisors (see below), whose sum is σ = 764701860. Its totient is φ = 194084160.

The previous prime is 397885963. The next prime is 397885979. The reversal of 397885976 is 679588793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397885979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1346 + ... + 28241.

Almost surely, 2^397885976 is an apocalyptic number.

It is an amenable number.

397885976 is a deficient number, since it is larger than the sum of its proper divisors (366815884).

397885976 is a wasteful number, since it uses less digits than its factorization.

397885976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29675 (or 29630 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 62.

The square root of 397885976 is about 19947.0793852133. The cubic root of 397885976 is about 735.5059844483.

The spelling of 397885976 in words is "three hundred ninety-seven million, eight hundred eighty-five thousand, nine hundred seventy-six".