809078316 has 12 divisors (see below), whose sum is σ = 1887849432. Its totient is φ = 269692768.

The previous prime is 809078293. The next prime is 809078321. The reversal of 809078316 is 613870908.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 33711585 + ... + 33711608.

It is an arithmetic number, because the mean of its divisors is an integer number (157320786).

Almost surely, 2^809078316 is an apocalyptic number.

It is an amenable number.

809078316 is an abundant number, since it is smaller than the sum of its proper divisors (1078771116).

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

809078316 is a wasteful number, since it uses less digits than its factorization.

809078316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67423200 (or 67423198 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 809078316 is about 28444.3019953030. The cubic root of 809078316 is about 931.8160513631.

The spelling of 809078316 in words is "eight hundred nine million, seventy-eight thousand, three hundred sixteen".