400814512 has 30 divisors (see below), whose sum is σ = 903368148. Its totient is φ = 171777312.

The previous prime is 400814507. The next prime is 400814521. The reversal of 400814512 is 215418004.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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 5 ways as a sum of consecutive naturals, for example, 254838 + ... + 256405.

Almost surely, 2^400814512 is an apocalyptic number.

It is an amenable number.

400814512 is an abundant number, since it is smaller than the sum of its proper divisors (502553636).

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

400814512 is a wasteful number, since it uses less digits than its factorization.

400814512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511265 (or 511252 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 400814512 is about 20020.3524444501. The cubic root of 400814512 is about 737.3060752978.

The spelling of 400814512 in words is "four hundred million, eight hundred fourteen thousand, five hundred twelve".