397497965 has 16 divisors (see below), whose sum is σ = 496005120. Its totient is φ = 305477760.

The previous prime is 397497959. The next prime is 397497967. The reversal of 397497965 is 569794793.

It is not a de Polignac number, because 397497965 - 2²⁸ = 129062509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397497967) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11876 + ... + 30594.

It is an arithmetic number, because the mean of its divisors is an integer number (31000320).

Almost surely, 2^397497965 is an apocalyptic number.

It is an amenable number.

397497965 is a deficient number, since it is larger than the sum of its proper divisors (98507155).

397497965 is a wasteful number, since it uses less digits than its factorization.

397497965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18892.

The product of its digits is 12859560, while the sum is 59.

The square root of 397497965 is about 19937.3510025781. The cubic root of 397497965 is about 735.2668227728.

The spelling of 397497965 in words is "three hundred ninety-seven million, four hundred ninety-seven thousand, nine hundred sixty-five".