809712994 has 8 divisors (see below), whose sum is σ = 1253749248. Its totient is φ = 391796580.

The previous prime is 809712989. The next prime is 809712997. The reversal of 809712994 is 499217908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (809712997) by changing a digit.

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, 6529882 + ... + 6530005.

It is an arithmetic number, because the mean of its divisors is an integer number (156718656).

Almost surely, 2^809712994 is an apocalyptic number.

809712994 is a deficient number, since it is larger than the sum of its proper divisors (444036254).

809712994 is a wasteful number, since it uses less digits than its factorization.

809712994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13059920.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 809712994 is about 28455.4563133329. The cubic root of 809712994 is about 932.0596407093.

The spelling of 809712994 in words is "eight hundred nine million, seven hundred twelve thousand, nine hundred ninety-four".