400624324 has 12 divisors (see below), whose sum is σ = 707297724. Its totient is φ = 198539264.

The previous prime is 400624321. The next prime is 400624349. The reversal of 400624324 is 423426004.

It can be written as a sum of positive squares in 2 ways, for example, as 105884100 + 294740224 = 10290^2 + 17168^2 .

It is not an unprimeable number, because it can be changed into a prime (400624321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442717 + ... + 443620.

It is an arithmetic number, because the mean of its divisors is an integer number (58941477).

Almost surely, 2^400624324 is an apocalyptic number.

It is an amenable number.

400624324 is a deficient number, since it is larger than the sum of its proper divisors (306673400).

400624324 is a wasteful number, since it uses less digits than its factorization.

400624324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886454 (or 886452 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 400624324 is about 20015.6020144286. The cubic root of 400624324 is about 737.1894386750.

The spelling of 400624324 in words is "four hundred million, six hundred twenty-four thousand, three hundred twenty-four".