13979191308 has 12 divisors (see below), whose sum is σ = 32618113080. Its totient is φ = 4659730432.

The previous prime is 13979191301. The next prime is 13979191313. The reversal of 13979191308 is 80319197931.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13979191301) 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, 582466293 + ... + 582466316.

It is an arithmetic number, because the mean of its divisors is an integer number (2718176090).

Almost surely, 2^13979191308 is an apocalyptic number.

It is an amenable number.

13979191308 is an abundant number, since it is smaller than the sum of its proper divisors (18638921772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13979191308 is a wasteful number, since it uses less digits than its factorization.

13979191308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164932616 (or 1164932614 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 51.

The spelling of 13979191308 in words is "thirteen billion, nine hundred seventy-nine million, one hundred ninety-one thousand, three hundred eight".