13931548879 has 4 divisors (see below), whose sum is σ = 13954056040. Its totient is φ = 13909041720.

The previous prime is 13931548871. The next prime is 13931548951. The reversal of 13931548879 is 97884513931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13931548879 - 2³ = 13931548871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13931548871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11252652 + ... + 11253889.

It is an arithmetic number, because the mean of its divisors is an integer number (3488514010).

Almost surely, 2^13931548879 is an apocalyptic number.

13931548879 is a deficient number, since it is larger than the sum of its proper divisors (22507161).

13931548879 is an equidigital number, since it uses as much as digits as its factorization.

13931548879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22507160.

The product of its digits is 6531840, while the sum is 58.

The spelling of 13931548879 in words is "thirteen billion, nine hundred thirty-one million, five hundred forty-eight thousand, eight hundred seventy-nine".