13999079 has 2 divisors, whose sum is σ = 13999080. Its totient is φ = 13999078.

The previous prime is 13999057. The next prime is 13999099. The reversal of 13999079 is 97099931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13999079 - 2⁸ = 13998823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13999009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6999539 + 6999540.

It is an arithmetic number, because the mean of its divisors is an integer number (6999540).

Almost surely, 2^13999079 is an apocalyptic number.

13999079 is a deficient number, since it is larger than the sum of its proper divisors (1).

13999079 is an equidigital number, since it uses as much as digits as its factorization.

13999079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 13999079 is about 3741.5343109478. The cubic root of 13999079 is about 241.0089412039.

The spelling of 13999079 in words is "thirteen million, nine hundred ninety-nine thousand, seventy-nine".