904900 has 18 divisors (see below), whose sum is σ = 1963850. Its totient is φ = 361920.

The previous prime is 904879. The next prime is 904901. The reversal of 904900 is 9409.

It can be written as a sum of positive squares in 3 ways, for example, as 158404 + 746496 = 398^2 + 864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904901) by changing a digit.

904900 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 5 ways as a sum of consecutive naturals, for example, 4425 + ... + 4624.

2⁹⁰⁴⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

904900 is an abundant number, since it is smaller than the sum of its proper divisors (1058950).

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

904900 is a wasteful number, since it uses less digits than its factorization.

904900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063 (or 9056 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 904900 is about 951.2623192369. The cubic root of 904900 is about 96.7238398737.

The spelling of 904900 in words is "nine hundred four thousand, nine hundred".