397823624 has 32 divisors (see below), whose sum is σ = 841795200. Its totient is φ = 174592320.

The previous prime is 397823623. The next prime is 397823627. The reversal of 397823624 is 426328793.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (397823623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75392 + ... + 80495.

It is an arithmetic number, because the mean of its divisors is an integer number (26306100).

Almost surely, 2^397823624 is an apocalyptic number.

It is an amenable number.

397823624 is an abundant number, since it is smaller than the sum of its proper divisors (443971576).

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

397823624 is a wasteful number, since it uses less digits than its factorization.

397823624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155933 (or 155929 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 397823624 is about 19945.5163884017. The cubic root of 397823624 is about 735.4675624986.

The spelling of 397823624 in words is "three hundred ninety-seven million, eight hundred twenty-three thousand, six hundred twenty-four".