397954572 has 12 divisors (see below), whose sum is σ = 928560696. Its totient is φ = 132651520.

The previous prime is 397954561. The next prime is 397954589. The reversal of 397954572 is 275459793.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16581429 + ... + 16581452.

It is an arithmetic number, because the mean of its divisors is an integer number (77380058).

Almost surely, 2^397954572 is an apocalyptic number.

It is an amenable number.

397954572 is an abundant number, since it is smaller than the sum of its proper divisors (530606124).

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

397954572 is a wasteful number, since it uses less digits than its factorization.

397954572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33162888 (or 33162886 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 51.

The square root of 397954572 is about 19948.7987608277. The cubic root of 397954572 is about 735.5482493789.

The spelling of 397954572 in words is "three hundred ninety-seven million, nine hundred fifty-four thousand, five hundred seventy-two".