13939311 has 16 divisors (see below), whose sum is σ = 19491840. Its totient is φ = 8844000.

The previous prime is 13939301. The next prime is 13939327. The reversal of 13939311 is 11393931.

It is a happy number.

It is not a de Polignac number, because 13939311 - 2⁵ = 13939279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13939301) 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, 18186 + ... + 18936.

It is an arithmetic number, because the mean of its divisors is an integer number (1218240).

Almost surely, 2^13939311 is an apocalyptic number.

13939311 is a deficient number, since it is larger than the sum of its proper divisors (5552529).

13939311 is a wasteful number, since it uses less digits than its factorization.

13939311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046.

The product of its digits is 2187, while the sum is 30.

The square root of 13939311 is about 3733.5386699484. The cubic root of 13939311 is about 240.6654621562.

The spelling of 13939311 in words is "thirteen million, nine hundred thirty-nine thousand, three hundred eleven".