13249879 has 2 divisors, whose sum is σ = 13249880. Its totient is φ = 13249878.

The previous prime is 13249867. The next prime is 13249883. The reversal of 13249879 is 97894231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13249879 - 2¹⁹ = 12725591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13249889) 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 as a sum of consecutive naturals, namely, 6624939 + 6624940.

It is an arithmetic number, because the mean of its divisors is an integer number (6624940).

Almost surely, 2^13249879 is an apocalyptic number.

13249879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13249879 is an equidigital number, since it uses as much as digits as its factorization.

13249879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 13249879 is about 3640.0383239741. The cubic root of 13249879 is about 236.6304542447.

The spelling of 13249879 in words is "thirteen million, two hundred forty-nine thousand, eight hundred seventy-nine".