309979113 has 8 divisors (see below), whose sum is σ = 419126976. Its totient is φ = 203742000.

The previous prime is 309979099. The next prime is 309979123. The reversal of 309979113 is 311979903.

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

It is not a de Polignac number, because 309979113 - 2⁶ = 309979049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (309979123) 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, 727438 + ... + 727863.

It is an arithmetic number, because the mean of its divisors is an integer number (52390872).

Almost surely, 2^309979113 is an apocalyptic number.

It is an amenable number.

309979113 is a deficient number, since it is larger than the sum of its proper divisors (109147863).

309979113 is a wasteful number, since it uses less digits than its factorization.

309979113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455375.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 309979113 is about 17606.2237007258. The cubic root of 309979113 is about 676.7747447493.

The spelling of 309979113 in words is "three hundred nine million, nine hundred seventy-nine thousand, one hundred thirteen".