404085172 has 12 divisors (see below), whose sum is σ = 748746180. Its totient is φ = 190157696.

The previous prime is 404085163. The next prime is 404085173. The reversal of 404085172 is 271580404.

It can be written as a sum of positive squares in 2 ways, for example, as 340181136 + 63904036 = 18444^2 + 7994^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404085173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2971147 + ... + 2971282.

It is an arithmetic number, because the mean of its divisors is an integer number (62395515).

Almost surely, 2^404085172 is an apocalyptic number.

It is an amenable number.

404085172 is a deficient number, since it is larger than the sum of its proper divisors (344661008).

404085172 is a wasteful number, since it uses less digits than its factorization.

404085172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942450 (or 5942448 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 404085172 is about 20101.8698632739. The cubic root of 404085172 is about 739.3061258156.

The spelling of 404085172 in words is "four hundred four million, eighty-five thousand, one hundred seventy-two".