397672976 has 20 divisors (see below), whose sum is σ = 815814972. Its totient is φ = 187140096.

The previous prime is 397672973. The next prime is 397672997. The reversal of 397672976 is 679276793.

It can be written as a sum of positive squares in 2 ways, for example, as 361912576 + 35760400 = 19024^2 + 5980^2 .

It is not an unprimeable number, because it can be changed into a prime (397672973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730745 + ... + 731288.

Almost surely, 2^397672976 is an apocalyptic number.

It is an amenable number.

397672976 is an abundant number, since it is smaller than the sum of its proper divisors (418141996).

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

397672976 is a wasteful number, since it uses less digits than its factorization.

397672976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462058 (or 1462052 counting only the distinct ones).

The product of its digits is 6001128, while the sum is 56.

The square root of 397672976 is about 19941.7395429787. The cubic root of 397672976 is about 735.3747150664.

The spelling of 397672976 in words is "three hundred ninety-seven million, six hundred seventy-two thousand, nine hundred seventy-six".