13616939 has 16 divisors (see below), whose sum is σ = 16769280. Its totient is φ = 10795680.

The previous prime is 13616929. The next prime is 13616947. The reversal of 13616939 is 93961631.

It is not a de Polignac number, because 13616939 - 2²⁰ = 12568363 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13616929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4529 + ... + 6909.

It is an arithmetic number, because the mean of its divisors is an integer number (1048080).

Almost surely, 2^13616939 is an apocalyptic number.

13616939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13616939 is a deficient number, since it is larger than the sum of its proper divisors (3152341).

13616939 is a wasteful number, since it uses less digits than its factorization.

13616939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450.

The product of its digits is 26244, while the sum is 38.

The square root of 13616939 is about 3690.1136838856. The cubic root of 13616939 is about 238.7956973282.

The spelling of 13616939 in words is "thirteen million, six hundred sixteen thousand, nine hundred thirty-nine".