809712204 has 48 divisors (see below), whose sum is σ = 2188827648. Its totient is φ = 228175488.

The previous prime is 809712203. The next prime is 809712223. The reversal of 809712204 is 402217908.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (809712203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59892 + ... + 72155.

It is an arithmetic number, because the mean of its divisors is an integer number (45600576).

Almost surely, 2^809712204 is an apocalyptic number.

809712204 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

809712204 is an abundant number, since it is smaller than the sum of its proper divisors (1379115444).

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

809712204 is a wasteful number, since it uses less digits than its factorization.

809712204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132134 (or 132132 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 809712204 is about 28455.4424319848. The cubic root of 809712204 is about 932.0593375865.

It can be divided in two parts, 8097 and 12204, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 809712204 in words is "eight hundred nine million, seven hundred twelve thousand, two hundred four".