397443570 has 16 divisors (see below), whose sum is σ = 953864640. Its totient is φ = 105984944.

The previous prime is 397443547. The next prime is 397443581. The reversal of 397443570 is 75344793.

It is a super-2 number, since 2×397443570² = 315922782668689800, which contains 22 as substring.

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, 6624030 + ... + 6624089.

It is an arithmetic number, because the mean of its divisors is an integer number (59616540).

Almost surely, 2^397443570 is an apocalyptic number.

397443570 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

397443570 is an abundant number, since it is smaller than the sum of its proper divisors (556421070).

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

397443570 is a wasteful number, since it uses less digits than its factorization.

397443570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13248129.

The product of its (nonzero) digits is 317520, while the sum is 42.

The square root of 397443570 is about 19935.9868077805. The cubic root of 397443570 is about 735.2332824223.

The spelling of 397443570 in words is "three hundred ninety-seven million, four hundred forty-three thousand, five hundred seventy".