13979378 has 8 divisors (see below), whose sum is σ = 23964672. Its totient is φ = 5991156.

The previous prime is 13979347. The next prime is 13979387. The reversal of 13979378 is 87397931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499250 + ... + 499277.

It is an arithmetic number, because the mean of its divisors is an integer number (2995584).

Almost surely, 2^13979378 is an apocalyptic number.

13979378 is a deficient number, since it is larger than the sum of its proper divisors (9985294).

13979378 is an equidigital number, since it uses as much as digits as its factorization.

13979378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998536.

The product of its digits is 285768, while the sum is 47.

The square root of 13979378 is about 3738.9006405627. The cubic root of 13979378 is about 240.8958302808.

The spelling of 13979378 in words is "thirteen million, nine hundred seventy-nine thousand, three hundred seventy-eight".