408664398 has 16 divisors (see below), whose sum is σ = 819758160. Its totient is φ = 135816576.

The previous prime is 408664363. The next prime is 408664429. The reversal of 408664398 is 893466804.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99033 + ... + 103076.

It is an arithmetic number, because the mean of its divisors is an integer number (51234885).

Almost surely, 2^408664398 is an apocalyptic number.

408664398 is an abundant number, since it is smaller than the sum of its proper divisors (411093762).

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

408664398 is a wasteful number, since it uses less digits than its factorization.

408664398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202451.

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 408664398 is about 20215.4494879535. The cubic root of 408664398 is about 742.0883291994.

The spelling of 408664398 in words is "four hundred eight million, six hundred sixty-four thousand, three hundred ninety-eight".