904808 has 16 divisors (see below), whose sum is σ = 1796580. Its totient is φ = 425728.

The previous prime is 904801. The next prime is 904811. The reversal of 904808 is 808409.

It can be written as a sum of positive squares in 2 ways, for example, as 879844 + 24964 = 938^2 + 158^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (904801) by changing a digit.

904808 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 3191 + ... + 3462.

2⁹⁰⁴⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

904808 is a deficient number, since it is larger than the sum of its proper divisors (891772).

904808 is a wasteful number, since it uses less digits than its factorization.

904808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676 (or 6672 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 904808 is about 951.2139612096. The cubic root of 904808 is about 96.7205618339.

The spelling of 904808 in words is "nine hundred four thousand, eight hundred eight".