15339971 has 2 divisors, whose sum is σ = 15339972. Its totient is φ = 15339970.

The previous prime is 15339959. The next prime is 15340007. The reversal of 15339971 is 17993351.

It is a weak prime.

It is an emirp because it is prime and its reverse (17993351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15339971 is a prime.

It is not a weakly prime, because it can be changed into another prime (15330971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7669985 + 7669986.

It is an arithmetic number, because the mean of its divisors is an integer number (7669986).

Almost surely, 2^15339971 is an apocalyptic number.

15339971 is a deficient number, since it is larger than the sum of its proper divisors (1).

15339971 is an equidigital number, since it uses as much as digits as its factorization.

15339971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25515, while the sum is 38.

The square root of 15339971 is about 3916.6275033503. The cubic root of 15339971 is about 248.4705070210.

The spelling of 15339971 in words is "fifteen million, three hundred thirty-nine thousand, nine hundred seventy-one".