13051979 has 2 divisors, whose sum is σ = 13051980. Its totient is φ = 13051978.

The previous prime is 13051949. The next prime is 13051991. The reversal of 13051979 is 97915031.

It is a strong prime.

It is an emirp because it is prime and its reverse (97915031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13051979 - 2⁸ = 13051723 is a prime.

It is not a weakly prime, because it can be changed into another prime (13051949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6525989 + 6525990.

It is an arithmetic number, because the mean of its divisors is an integer number (6525990).

Almost surely, 2^13051979 is an apocalyptic number.

13051979 is a deficient number, since it is larger than the sum of its proper divisors (1).

13051979 is an equidigital number, since it uses as much as digits as its factorization.

13051979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 13051979 is about 3612.7522749284. The cubic root of 13051979 is about 235.4464367013.

The spelling of 13051979 in words is "thirteen million, fifty-one thousand, nine hundred seventy-nine".