809864976 has 20 divisors (see below), whose sum is σ = 2092151312. Its totient is φ = 269954976.

The previous prime is 809864971. The next prime is 809864999. The reversal of 809864976 is 679468908.

It is not an unprimeable number, because it can be changed into a prime (809864971) by changing a digit.

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, 8436046 + ... + 8436141.

Almost surely, 2^809864976 is an apocalyptic number.

It is an amenable number.

809864976 is an abundant number, since it is smaller than the sum of its proper divisors (1282286336).

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

809864976 is a wasteful number, since it uses less digits than its factorization.

809864976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16872198 (or 16872192 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The square root of 809864976 is about 28458.1267127687. The cubic root of 809864976 is about 932.1179524928.

The spelling of 809864976 in words is "eight hundred nine million, eight hundred sixty-four thousand, nine hundred seventy-six".