15393139 has 2 divisors, whose sum is σ = 15393140. Its totient is φ = 15393138.

The previous prime is 15393137. The next prime is 15393179. The reversal of 15393139 is 93139351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15393139 - 2¹ = 15393137 is a prime.

Together with 15393137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15393137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7696569 + 7696570.

It is an arithmetic number, because the mean of its divisors is an integer number (7696570).

Almost surely, 2^15393139 is an apocalyptic number.

15393139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15393139 is an equidigital number, since it uses as much as digits as its factorization.

15393139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10935, while the sum is 34.

The square root of 15393139 is about 3923.4091043377. The cubic root of 15393139 is about 248.7572404313.

The spelling of 15393139 in words is "fifteen million, three hundred ninety-three thousand, one hundred thirty-nine".