13880979 has 12 divisors (see below), whose sum is σ = 22914736. Its totient is φ = 7931952.

The previous prime is 13880969. The next prime is 13880981. The reversal of 13880979 is 97908831.

It is not a de Polignac number, because 13880979 - 2⁵ = 13880947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13880929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110104 + ... + 110229.

Almost surely, 2^13880979 is an apocalyptic number.

13880979 is a deficient number, since it is larger than the sum of its proper divisors (9033757).

13880979 is a wasteful number, since it uses less digits than its factorization.

13880979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220346 (or 220343 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 13880979 is about 3725.7185884068. The cubic root of 13880979 is about 240.3292875837.

The spelling of 13880979 in words is "thirteen million, eight hundred eighty thousand, nine hundred seventy-nine".