13879 has 2 divisors, whose sum is σ = 13880.
Its totient is φ = 13878.
The previous prime is 13877. The next prime is 13883. The reversal of 13879 is 97831.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 13879 - 21 = 13877 is a prime.
Together with 13877, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13873) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939 + 6940.
It is an arithmetic number, because the mean of its divisors is an integer number (6940).
213879 is an apocalyptic number.
13879 is a deficient number, since it is larger than the sum of its proper divisors (1).
13879 is an equidigital number, since it uses as much as digits as its factorization.
13879 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1512, while the sum is 28.
The square root of 13879 is about 117.8091677248.
The cubic root of 13879 is about 24.0317865857.
The spelling of 13879 in words is "thirteen thousand, eight hundred seventy-nine".