397927536 has 40 divisors (see below), whose sum is σ = 1028989200. Its totient is φ = 132512256.

The previous prime is 397927529. The next prime is 397927549. The reversal of 397927536 is 635729793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53790 + ... + 60738.

It is an arithmetic number, because the mean of its divisors is an integer number (25724730).

Almost surely, 2^397927536 is an apocalyptic number.

It is an amenable number.

397927536 is an abundant number, since it is smaller than the sum of its proper divisors (631061664).

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

397927536 is a wasteful number, since it uses less digits than its factorization.

397927536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8153 (or 8147 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 51.

The square root of 397927536 is about 19948.1211145311. The cubic root of 397927536 is about 735.5315919224.

The spelling of 397927536 in words is "three hundred ninety-seven million, nine hundred twenty-seven thousand, five hundred thirty-six".