13013999 has 2 divisors, whose sum is σ = 13014000. Its totient is φ = 13013998.

The previous prime is 13013981. The next prime is 13014007. The reversal of 13013999 is 99931031.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (99931031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13013999 - 2⁸ = 13013743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13013909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6506999 + 6507000.

It is an arithmetic number, because the mean of its divisors is an integer number (6507000).

Almost surely, 2^13013999 is an apocalyptic number.

13013999 is a deficient number, since it is larger than the sum of its proper divisors (1).

13013999 is an equidigital number, since it uses as much as digits as its factorization.

13013999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6561, while the sum is 35.

The square root of 13013999 is about 3607.4920651333. The cubic root of 13013999 is about 235.2178393518.

The spelling of 13013999 in words is "thirteen million, thirteen thousand, nine hundred ninety-nine".