804904 has 8 divisors (see below), whose sum is σ = 1509210. Its totient is φ = 402448.

The previous prime is 804901. The next prime is 804913. The reversal of 804904 is 409408.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 168100 = 798^2 + 410^2 .

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

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (804901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50299 + ... + 50314.

2⁸⁰⁴⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

804904 is a deficient number, since it is larger than the sum of its proper divisors (704306).

804904 is a wasteful number, since it uses less digits than its factorization.

804904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100619 (or 100615 counting only the distinct ones).

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

The square root of 804904 is about 897.1644219428. The cubic root of 804904 is about 93.0210766583.

The spelling of 804904 in words is "eight hundred four thousand, nine hundred four".