404605506 has 16 divisors (see below), whose sum is σ = 837115200. Its totient is φ = 130217808.

The previous prime is 404605451. The next prime is 404605517. The reversal of 404605506 is 605506404.

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, 1162486 + ... + 1162833.

It is an arithmetic number, because the mean of its divisors is an integer number (52319700).

Almost surely, 2^404605506 is an apocalyptic number.

404605506 is an abundant number, since it is smaller than the sum of its proper divisors (432509694).

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

404605506 is a wasteful number, since it uses less digits than its factorization.

404605506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325353.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 404605506 is about 20114.8081273474. The cubic root of 404605506 is about 739.6233205889.

The spelling of 404605506 in words is "four hundred four million, six hundred five thousand, five hundred six".