904561404 has 48 divisors (see below), whose sum is σ = 2136086400. Its totient is φ = 297907776.

The previous prime is 904561397. The next prime is 904561409. The reversal of 904561404 is 404165409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904561409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377442 + ... + 379830.

It is an arithmetic number, because the mean of its divisors is an integer number (44501800).

Almost surely, 2^904561404 is an apocalyptic number.

It is an amenable number.

904561404 is an abundant number, since it is smaller than the sum of its proper divisors (1231524996).

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

904561404 is a wasteful number, since it uses less digits than its factorization.

904561404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 904561404 is about 30075.9273173746. The cubic root of 904561404 is about 967.1177430813.

The spelling of 904561404 in words is "nine hundred four million, five hundred sixty-one thousand, four hundred four".