397469565 has 16 divisors (see below), whose sum is σ = 706612800. Its totient is φ = 211983696.

The previous prime is 397469557. The next prime is 397469581. The reversal of 397469565 is 565964793.

397469565 is a `hidden beast` number, since 3 + 9 + 74 + 6 + 9 + 565 = 666.

It is not a de Polignac number, because 397469565 - 2³ = 397469557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471975 + ... + 1472244.

It is an arithmetic number, because the mean of its divisors is an integer number (44163300).

Almost surely, 2^397469565 is an apocalyptic number.

It is an amenable number.

397469565 is a deficient number, since it is larger than the sum of its proper divisors (309143235).

397469565 is a wasteful number, since it uses less digits than its factorization.

397469565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944233 (or 2944227 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The square root of 397469565 is about 19936.6387588279. The cubic root of 397469565 is about 735.2493115091.

The spelling of 397469565 in words is "three hundred ninety-seven million, four hundred sixty-nine thousand, five hundred sixty-five".