13097999 has 2 divisors, whose sum is σ = 13098000. Its totient is φ = 13097998.

The previous prime is 13097993. The next prime is 13098013. The reversal of 13097999 is 99979031.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99979031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13097999 - 2⁸ = 13097743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13097993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6548999 + 6549000.

It is an arithmetic number, because the mean of its divisors is an integer number (6549000).

Almost surely, 2^13097999 is an apocalyptic number.

13097999 is a deficient number, since it is larger than the sum of its proper divisors (1).

13097999 is an equidigital number, since it uses as much as digits as its factorization.

13097999 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 13097999 is about 3619.1157759873. The cubic root of 13097999 is about 235.7228324681.

It can be divided in two parts, 130979 and 99, that multiplied together give a palindrome (12966921).

The spelling of 13097999 in words is "thirteen million, ninety-seven thousand, nine hundred ninety-nine".