809479164 has 24 divisors (see below), whose sum is σ = 2034076240. Its totient is φ = 249070464.

The previous prime is 809479147. The next prime is 809479199. The reversal of 809479164 is 461974908.

It is a super-4 number, since 4×809479164⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2594329 + ... + 2594640.

Almost surely, 2^809479164 is an apocalyptic number.

It is an amenable number.

809479164 is an abundant number, since it is smaller than the sum of its proper divisors (1224597076).

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

809479164 is a wasteful number, since it uses less digits than its factorization.

809479164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188989 (or 5188987 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 809479164 is about 28451.3473143189. The cubic root of 809479164 is about 931.9699115953.

The spelling of 809479164 in words is "eight hundred nine million, four hundred seventy-nine thousand, one hundred sixty-four".