15139 has 2 divisors, whose sum is σ = 15140. Its totient is φ = 15138.

The previous prime is 15137. The next prime is 15149. The reversal of 15139 is 93151.

It is a weak prime.

It is an emirp because it is prime and its reverse (93151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15139 - 2¹ = 15137 is a prime.

Together with 15137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7569 + 7570.

It is an arithmetic number, because the mean of its divisors is an integer number (7570).

2¹⁵¹³⁹ is an apocalyptic number.

15139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15139 is an equidigital number, since it uses as much as digits as its factorization.

15139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135, while the sum is 19.

The square root of 15139 is about 123.0406436914. The cubic root of 15139 is about 24.7380651909.

It can be divided in two parts, 151 and 39, that added together give a triangular number (190 = T₁₉).

The spelling of 15139 in words is "fifteen thousand, one hundred thirty-nine".