809399204 has 12 divisors (see below), whose sum is σ = 1450996428. Its totient is φ = 394828800.

The previous prime is 809399167. The next prime is 809399209. The reversal of 809399204 is 402993908.

809399204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 190384804 + 619014400 = 13798^2 + 24880^2 .

It is not an unprimeable number, because it can be changed into a prime (809399209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2467517 + ... + 2467844.

It is an arithmetic number, because the mean of its divisors is an integer number (120916369).

Almost surely, 2^809399204 is an apocalyptic number.

It is an amenable number.

809399204 is a deficient number, since it is larger than the sum of its proper divisors (641597224).

809399204 is a wasteful number, since it uses less digits than its factorization.

809399204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935406 (or 4935404 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 809399204 is about 28449.9420737547. The cubic root of 809399204 is about 931.9392240573.

The spelling of 809399204 in words is "eight hundred nine million, three hundred ninety-nine thousand, two hundred four".