13688379 has 16 divisors (see below), whose sum is σ = 21347200. Its totient is φ = 8644968.

The previous prime is 13688371. The next prime is 13688393. The reversal of 13688379 is 97388631.

It is a happy number.

It is not a de Polignac number, because 13688379 - 2³ = 13688371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13688371) 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, 12829 + ... + 13854.

It is an arithmetic number, because the mean of its divisors is an integer number (1334200).

Almost surely, 2^13688379 is an apocalyptic number.

13688379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13688379 is a deficient number, since it is larger than the sum of its proper divisors (7658821).

13688379 is a wasteful number, since it uses less digits than its factorization.

13688379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26711 (or 26705 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13688379 is about 3699.7809394611. The cubic root of 13688379 is about 239.2125755871.

The spelling of 13688379 in words is "thirteen million, six hundred eighty-eight thousand, three hundred seventy-nine".