15439241 has 2 divisors, whose sum is σ = 15439242. Its totient is φ = 15439240.

The previous prime is 15439219. The next prime is 15439243. The reversal of 15439241 is 14293451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15241216 + 198025 = 3904^2 + 445^2 .

It is an emirp because it is prime and its reverse (14293451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15439241 is a prime.

Together with 15439243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15439243) 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, 7719620 + 7719621.

It is an arithmetic number, because the mean of its divisors is an integer number (7719621).

Almost surely, 2^15439241 is an apocalyptic number.

It is an amenable number.

15439241 is a deficient number, since it is larger than the sum of its proper divisors (1).

15439241 is an equidigital number, since it uses as much as digits as its factorization.

15439241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 15439241 is about 3929.2799594837. The cubic root of 15439241 is about 249.0053331331.

The spelling of 15439241 in words is "fifteen million, four hundred thirty-nine thousand, two hundred forty-one".