13979371 has 4 divisors (see below), whose sum is σ = 15976432. Its totient is φ = 11982312.

The previous prime is 13979347. The next prime is 13979387. The reversal of 13979371 is 17397931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13979371 - 2¹¹ = 13977323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13979671) 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, 998520 + ... + 998533.

It is an arithmetic number, because the mean of its divisors is an integer number (3994108).

Almost surely, 2^13979371 is an apocalyptic number.

13979371 is a deficient number, since it is larger than the sum of its proper divisors (1997061).

13979371 is an equidigital number, since it uses as much as digits as its factorization.

13979371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997060.

The product of its digits is 35721, while the sum is 40.

The square root of 13979371 is about 3738.8997044585. The cubic root of 13979371 is about 240.8957900723.

The spelling of 13979371 in words is "thirteen million, nine hundred seventy-nine thousand, three hundred seventy-one".