13913879 has 4 divisors (see below), whose sum is σ = 15901584. Its totient is φ = 11926176.

The previous prime is 13913869. The next prime is 13913891. The reversal of 13913879 is 97831931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97831931 = 19 ⋅5149049.

It is a cyclic number.

It is not a de Polignac number, because 13913879 - 2⁸ = 13913623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13913819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993842 + ... + 993855.

It is an arithmetic number, because the mean of its divisors is an integer number (3975396).

Almost surely, 2^13913879 is an apocalyptic number.

13913879 is a deficient number, since it is larger than the sum of its proper divisors (1987705).

13913879 is an equidigital number, since it uses as much as digits as its factorization.

13913879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987704.

The product of its digits is 40824, while the sum is 41.

The square root of 13913879 is about 3730.1312309354. The cubic root of 13913879 is about 240.5190099124.

The spelling of 13913879 in words is "thirteen million, nine hundred thirteen thousand, eight hundred seventy-nine".