15139679 has 2 divisors, whose sum is σ = 15139680. Its totient is φ = 15139678.

The previous prime is 15139669. The next prime is 15139699. The reversal of 15139679 is 97693151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15139679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15139669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7569839 + 7569840.

It is an arithmetic number, because the mean of its divisors is an integer number (7569840).

Almost surely, 2^15139679 is an apocalyptic number.

15139679 is a deficient number, since it is larger than the sum of its proper divisors (1).

15139679 is an equidigital number, since it uses as much as digits as its factorization.

15139679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 41.

The square root of 15139679 is about 3890.9740425760. The cubic root of 15139679 is about 247.3843502811.

The spelling of 15139679 in words is "fifteen million, one hundred thirty-nine thousand, six hundred seventy-nine".