13971339 has 8 divisors (see below), whose sum is σ = 20698320. Its totient is φ = 9314208.

The previous prime is 13971337. The next prime is 13971341. The reversal of 13971339 is 93317931.

It is an interprime number because it is at equal distance from previous prime (13971337) and next prime (13971341).

It is not a de Polignac number, because 13971339 - 2¹ = 13971337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13971337) 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, 258702 + ... + 258755.

It is an arithmetic number, because the mean of its divisors is an integer number (2587290).

Almost surely, 2^13971339 is an apocalyptic number.

13971339 is a deficient number, since it is larger than the sum of its proper divisors (6726981).

13971339 is an equidigital number, since it uses as much as digits as its factorization.

13971339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517466 (or 517460 counting only the distinct ones).

The product of its digits is 15309, while the sum is 36.

The square root of 13971339 is about 3737.8254373365. The cubic root of 13971339 is about 240.8496447993.

The spelling of 13971339 in words is "thirteen million, nine hundred seventy-one thousand, three hundred thirty-nine".