809479179 has 6 divisors (see below), whose sum is σ = 1169247716. Its totient is φ = 539652780.

The previous prime is 809479147. The next prime is 809479199. The reversal of 809479179 is 971974908.

809479179 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 809479179 - 2⁵ = 809479147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809479199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44971057 + ... + 44971074.

Almost surely, 2^809479179 is an apocalyptic number.

809479179 is a deficient number, since it is larger than the sum of its proper divisors (359768537).

809479179 is a wasteful number, since it uses less digits than its factorization.

809479179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89942137 (or 89942134 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 809479179 is about 28451.3475779268. The cubic root of 809479179 is about 931.9699173519.

The spelling of 809479179 in words is "eight hundred nine million, four hundred seventy-nine thousand, one hundred seventy-nine".