15113999 has 2 divisors, whose sum is σ = 15114000. Its totient is φ = 15113998.

The previous prime is 15113981. The next prime is 15114007. The reversal of 15113999 is 99931151.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15113999 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 (15113929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7556999 + 7557000.

It is an arithmetic number, because the mean of its divisors is an integer number (7557000).

Almost surely, 2^15113999 is an apocalyptic number.

15113999 is a deficient number, since it is larger than the sum of its proper divisors (1).

15113999 is an equidigital number, since it uses as much as digits as its factorization.

15113999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10935, while the sum is 38.

The square root of 15113999 is about 3887.6726971287. The cubic root of 15113999 is about 247.2443995947.

The spelling of 15113999 in words is "fifteen million, one hundred thirteen thousand, nine hundred ninety-nine".