13944468139 has 16 divisors (see below), whose sum is σ = 16367984640. Its totient is φ = 11630341440.

The previous prime is 13944468107. The next prime is 13944468191. The reversal of 13944468139 is 93186444931.

It is a cyclic number.

It is not a de Polignac number, because 13944468139 - 2⁵ = 13944468107 is a prime.

It is a super-2 number, since 2×13944468139² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13944468539) 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, 46492 + ... + 173350.

It is an arithmetic number, because the mean of its divisors is an integer number (1022999040).

Almost surely, 2^13944468139 is an apocalyptic number.

13944468139 is a deficient number, since it is larger than the sum of its proper divisors (2423516501).

13944468139 is a wasteful number, since it uses less digits than its factorization.

13944468139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127290.

The product of its digits is 2239488, while the sum is 52.

The spelling of 13944468139 in words is "thirteen billion, nine hundred forty-four million, four hundred sixty-eight thousand, one hundred thirty-nine".