408704490 has 36 divisors (see below), whose sum is σ = 1063130562. Its totient is φ = 108936720.

The previous prime is 408704447. The next prime is 408704507. The reversal of 408704490 is 94407804.

408704490 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 367834041 + 40870449 = 19179^2 + 6393^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 190725 + ... + 192855.

Almost surely, 2^408704490 is an apocalyptic number.

408704490 is an abundant number, since it is smaller than the sum of its proper divisors (654426072).

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

408704490 is an equidigital number, since it uses as much as digits as its factorization.

408704490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 408704490 is about 20216.4410814564. The cubic root of 408704490 is about 742.1125959184.

The spelling of 408704490 in words is "four hundred eight million, seven hundred four thousand, four hundred ninety".