13863979 has 2 divisors, whose sum is σ = 13863980. Its totient is φ = 13863978.

The previous prime is 13863973. The next prime is 13864021. The reversal of 13863979 is 97936831.

13863979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (97936831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13863979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13863973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6931989 + 6931990.

It is an arithmetic number, because the mean of its divisors is an integer number (6931990).

Almost surely, 2^13863979 is an apocalyptic number.

13863979 is a deficient number, since it is larger than the sum of its proper divisors (1).

13863979 is an equidigital number, since it uses as much as digits as its factorization.

13863979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 13863979 is about 3723.4364503775. The cubic root of 13863979 is about 240.2311372804.

The spelling of 13863979 in words is "thirteen million, eight hundred sixty-three thousand, nine hundred seventy-nine".