405604408 has 32 divisors (see below), whose sum is σ = 830661120. Its totient is φ = 184140000.

The previous prime is 405604393. The next prime is 405604429. The reversal of 405604408 is 804406504.

It is a self number, because there is not a number n which added to its sum of digits gives 405604408.

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, 84883 + ... + 89533.

It is an arithmetic number, because the mean of its divisors is an integer number (25958160).

Almost surely, 2^405604408 is an apocalyptic number.

It is an amenable number.

405604408 is an abundant number, since it is smaller than the sum of its proper divisors (425056712).

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

405604408 is a wasteful number, since it uses less digits than its factorization.

405604408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5659 (or 5655 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 405604408 is about 20139.6228365876. The cubic root of 405604408 is about 740.2314883277.

The spelling of 405604408 in words is "four hundred five million, six hundred four thousand, four hundred eight".