15139699 has 2 divisors, whose sum is σ = 15139700. Its totient is φ = 15139698.

The previous prime is 15139679. The next prime is 15139703. The reversal of 15139699 is 99693151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15139699 is a prime.

It is not a weakly prime, because it can be changed into another prime (15139669) 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, 7569849 + 7569850.

It is an arithmetic number, because the mean of its divisors is an integer number (7569850).

Almost surely, 2^15139699 is an apocalyptic number.

15139699 is a deficient number, since it is larger than the sum of its proper divisors (1).

15139699 is an equidigital number, since it uses as much as digits as its factorization.

15139699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 43.

The square root of 15139699 is about 3890.9766126257. The cubic root of 15139699 is about 247.3844592152.

The spelling of 15139699 in words is "fifteen million, one hundred thirty-nine thousand, six hundred ninety-nine".