904408 has 8 divisors (see below), whose sum is σ = 1695780. Its totient is φ = 452200.

The previous prime is 904399. The next prime is 904441. The reversal of 904408 is 804409.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56518 + ... + 56533.

2⁹⁰⁴⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

904408 is a deficient number, since it is larger than the sum of its proper divisors (791372).

904408 is a wasteful number, since it uses less digits than its factorization.

904408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113057 (or 113053 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 904408 is about 951.0036803294. The cubic root of 904408 is about 96.7063069027.

Subtracting from 904408 its reverse (804409), we obtain a palindrome (99999).

The spelling of 904408 in words is "nine hundred four thousand, four hundred eight".