13109979 has 8 divisors (see below), whose sum is σ = 17500672. Its totient is φ = 8729640.

The previous prime is 13109963. The next prime is 13109983. The reversal of 13109979 is 97990131.

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

It is not a de Polignac number, because 13109979 - 2⁴ = 13109963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13109909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1134 + ... + 5244.

It is an arithmetic number, because the mean of its divisors is an integer number (2187584).

Almost surely, 2^13109979 is an apocalyptic number.

13109979 is a deficient number, since it is larger than the sum of its proper divisors (4390693).

13109979 is a wasteful number, since it uses less digits than its factorization.

13109979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 13109979 is about 3620.7704981122. The cubic root of 13109979 is about 235.7946780225.

The spelling of 13109979 in words is "thirteen million, one hundred nine thousand, nine hundred seventy-nine".