79230909 has 4 divisors (see below), whose sum is σ = 105641216. Its totient is φ = 52820604.

The previous prime is 79230889. The next prime is 79230961. The reversal of 79230909 is 90903297.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 79230909 - 2²⁴ = 62453693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79230509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13205149 + ... + 13205154.

It is an arithmetic number, because the mean of its divisors is an integer number (26410304).

Almost surely, 2^79230909 is an apocalyptic number.

It is an amenable number.

79230909 is a deficient number, since it is larger than the sum of its proper divisors (26410307).

79230909 is a wasteful number, since it uses less digits than its factorization.

79230909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26410306.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 79230909 is about 8901.1745854129. The cubic root of 79230909 is about 429.5016924523.

The spelling of 79230909 in words is "seventy-nine million, two hundred thirty thousand, nine hundred nine".