13979017747 has 4 divisors (see below), whose sum is σ = 14079586360. Its totient is φ = 13878449136.

The previous prime is 13979017727. The next prime is 13979017753. The reversal of 13979017747 is 74771097931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13979017747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13979017727) 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, 50284098 + ... + 50284375.

It is an arithmetic number, because the mean of its divisors is an integer number (3519896590).

Almost surely, 2^13979017747 is an apocalyptic number.

13979017747 is a deficient number, since it is larger than the sum of its proper divisors (100568613).

13979017747 is a wasteful number, since it uses less digits than its factorization.

13979017747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100568612.

The product of its (nonzero) digits is 2333772, while the sum is 55.

The spelling of 13979017747 in words is "thirteen billion, nine hundred seventy-nine million, seventeen thousand, seven hundred forty-seven".