399456324 has 36 divisors (see below), whose sum is σ = 1044558060. Its totient is φ = 128560320.

The previous prime is 399456319. The next prime is 399456347. The reversal of 399456324 is 423654993.

399456324 is a `hidden beast` number, since 3 + 9 + 9 + 4 + 5 + 632 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 306950400 + 92505924 = 17520^2 + 9618^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 399456324.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190267 + ... + 192354.

Almost surely, 2^399456324 is an apocalyptic number.

It is an amenable number.

399456324 is an abundant number, since it is smaller than the sum of its proper divisors (645101736).

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

399456324 is a wasteful number, since it uses less digits than its factorization.

399456324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382660 (or 382655 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 399456324 is about 19986.4034783650. The cubic root of 399456324 is about 736.4723284540.

The spelling of 399456324 in words is "three hundred ninety-nine million, four hundred fifty-six thousand, three hundred twenty-four".