809652964 has 12 divisors (see below), whose sum is σ = 1420051500. Its totient is φ = 403923968.

The previous prime is 809652911. The next prime is 809652983. The reversal of 809652964 is 469256908.

It can be written as a sum of positive squares in 2 ways, for example, as 517926564 + 291726400 = 22758^2 + 17080^2 .

It is a super-2 number, since 2×809652964² = 1311075844227970592, which contains 22 as substring.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 223609 + ... + 227200.

It is an arithmetic number, because the mean of its divisors is an integer number (118337625).

Almost surely, 2^809652964 is an apocalyptic number.

It is an amenable number.

809652964 is a deficient number, since it is larger than the sum of its proper divisors (610398536).

809652964 is a wasteful number, since it uses less digits than its factorization.

809652964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451262 (or 451260 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 809652964 is about 28454.4014872919. The cubic root of 809652964 is about 932.0366066534.

Subtracting from 809652964 its product of nonzero digits (933120), we obtain a square (808719844 = 28438²).

The spelling of 809652964 in words is "eight hundred nine million, six hundred fifty-two thousand, nine hundred sixty-four".