404486172 has 18 divisors (see below), whose sum is σ = 1022451248. Its totient is φ = 134828712.

The previous prime is 404486167. The next prime is 404486177. The reversal of 404486172 is 271684404.

404486172 is a `hidden beast` number, since 4 + 0 + 4 + 486 + 172 = 666.

It is an interprime number because it is at equal distance from previous prime (404486167) and next prime (404486177).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11235727 = 404486172 / (4 + 0 + 4 + 4 + 8 + 6 + 1 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404486177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5617828 + ... + 5617899.

Almost surely, 2^404486172 is an apocalyptic number.

It is an amenable number.

404486172 is an abundant number, since it is smaller than the sum of its proper divisors (617965076).

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

404486172 is a wasteful number, since it uses less digits than its factorization.

404486172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235737 (or 11235732 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 404486172 is about 20111.8415864883. The cubic root of 404486172 is about 739.5505988169.

The spelling of 404486172 in words is "four hundred four million, four hundred eighty-six thousand, one hundred seventy-two".