397940976 has 60 divisors (see below), whose sum is σ = 1116303552. Its totient is φ = 132334848.

The previous prime is 397940971. The next prime is 397940993. The reversal of 397940976 is 679049793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397940971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62785 + ... + 68831.

Almost surely, 2^397940976 is an apocalyptic number.

397940976 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

397940976 is an abundant number, since it is smaller than the sum of its proper divisors (718362576).

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

397940976 is a wasteful number, since it uses less digits than its factorization.

397940976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6518 (or 6509 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The square root of 397940976 is about 19948.4579855186. The cubic root of 397940976 is about 735.5398726875.

The spelling of 397940976 in words is "three hundred ninety-seven million, nine hundred forty thousand, nine hundred seventy-six".