397393900 has 36 divisors (see below), whose sum is σ = 872053560. Its totient is φ = 157168000.

The previous prime is 397393897. The next prime is 397393901. The reversal of 397393900 is 9393793.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (397393901) 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, 13426 + ... + 31225.

It is an arithmetic number, because the mean of its divisors is an integer number (24223710).

Almost surely, 2^397393900 is an apocalyptic number.

It is an amenable number.

397393900 is an abundant number, since it is smaller than the sum of its proper divisors (474659660).

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

397393900 is a wasteful number, since it uses less digits than its factorization.

397393900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44754 (or 44747 counting only the distinct ones).

The product of its (nonzero) digits is 137781, while the sum is 43.

The square root of 397393900 is about 19934.7410316763. The cubic root of 397393900 is about 735.2026528677.

The spelling of 397393900 in words is "three hundred ninety-seven million, three hundred ninety-three thousand, nine hundred".