79108809 has 8 divisors (see below), whose sum is σ = 113592192. Its totient is φ = 48682320.

The previous prime is 79108801. The next prime is 79108829. The reversal of 79108809 is 90880197.

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

It is not a de Polignac number, because 79108809 - 2³ = 79108801 is a prime.

It is a super-2 number, since 2×79108809² = 12516407322796962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79108801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1014177 + ... + 1014254.

It is an arithmetic number, because the mean of its divisors is an integer number (14199024).

Almost surely, 2^79108809 is an apocalyptic number.

It is an amenable number.

79108809 is a deficient number, since it is larger than the sum of its proper divisors (34483383).

79108809 is a wasteful number, since it uses less digits than its factorization.

79108809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028447.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 79108809 is about 8894.3132955839. The cubic root of 79108809 is about 429.2809489768.

The spelling of 79108809 in words is "seventy-nine million, one hundred eight thousand, eight hundred nine".