400765596 has 48 divisors (see below), whose sum is σ = 1165866240. Its totient is φ = 104094720.

The previous prime is 400765577. The next prime is 400765609. The reversal of 400765596 is 695567004.

It is a super-2 number, since 2×400765596² = 321226125874470432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215941 + ... + 217788.

It is an arithmetic number, because the mean of its divisors is an integer number (24288880).

Almost surely, 2^400765596 is an apocalyptic number.

It is an amenable number.

400765596 is an abundant number, since it is smaller than the sum of its proper divisors (765100644).

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

400765596 is a wasteful number, since it uses less digits than its factorization.

400765596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433754 (or 433752 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 400765596 is about 20019.1307503598. The cubic root of 400765596 is about 737.2760801003.

The spelling of 400765596 in words is "four hundred million, seven hundred sixty-five thousand, five hundred ninety-six".