809814764 has 18 divisors (see below), whose sum is σ = 1557723132. Its totient is φ = 368097400.

The previous prime is 809814727. The next prime is 809814781. The reversal of 809814764 is 467418908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 836102 + ... + 837069.

It is an arithmetic number, because the mean of its divisors is an integer number (86540174).

Almost surely, 2^809814764 is an apocalyptic number.

It is an amenable number.

809814764 is a deficient number, since it is larger than the sum of its proper divisors (747908368).

809814764 is a wasteful number, since it uses less digits than its factorization.

809814764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673197 (or 1673184 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 809814764 is about 28457.2444906389. The cubic root of 809814764 is about 932.0986881811.

The spelling of 809814764 in words is "eight hundred nine million, eight hundred fourteen thousand, seven hundred sixty-four".