404251164 has 36 divisors (see below), whose sum is σ = 1023016176. Its totient is φ = 134597568.

The previous prime is 404251157. The next prime is 404251189. The reversal of 404251164 is 461152404.

404251164 is a `hidden beast` number, since 404 + 251 + 1 + 6 + 4 = 666.

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

It is a congruent number.

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, 28417 + ... + 40199.

It is an arithmetic number, because the mean of its divisors is an integer number (28417116).

Almost surely, 2^404251164 is an apocalyptic number.

It is an amenable number.

404251164 is an abundant number, since it is smaller than the sum of its proper divisors (618765012).

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

404251164 is a wasteful number, since it uses less digits than its factorization.

404251164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12746 (or 12741 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 404251164 is about 20105.9982094896. The cubic root of 404251164 is about 739.4073438352.

The spelling of 404251164 in words is "four hundred four million, two hundred fifty-one thousand, one hundred sixty-four".