400765875 has 16 divisors (see below), whose sum is σ = 666875040. Its totient is φ = 213741600.

The previous prime is 400765867. The next prime is 400765903. The reversal of 400765875 is 578567004.

It is not a de Polignac number, because 400765875 - 2³ = 400765867 is a prime.

It is a super-2 number, since 2×400765875² = 321226573129031250, which contains 22 as substring.

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, 533980 + ... + 534729.

It is an arithmetic number, because the mean of its divisors is an integer number (41679690).

Almost surely, 2^400765875 is an apocalyptic number.

400765875 is a deficient number, since it is larger than the sum of its proper divisors (266109165).

400765875 is a wasteful number, since it uses less digits than its factorization.

400765875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068727 (or 1068717 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 400765875 is about 20019.1377186931. The cubic root of 400765875 is about 737.2762511895.

The spelling of 400765875 in words is "four hundred million, seven hundred sixty-five thousand, eight hundred seventy-five".