13315439 has 2 divisors, whose sum is σ = 13315440. Its totient is φ = 13315438.

The previous prime is 13315387. The next prime is 13315453. The reversal of 13315439 is 93451331.

It is a strong prime.

It is an emirp because it is prime and its reverse (93451331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13315439 - 2¹⁶ = 13249903 is a prime.

It is equal to p₈₆₈₄₃₀ and since 13315439 and 868430 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13315469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6657719 + 6657720.

It is an arithmetic number, because the mean of its divisors is an integer number (6657720).

Almost surely, 2^13315439 is an apocalyptic number.

13315439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13315439 is an equidigital number, since it uses as much as digits as its factorization.

13315439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

The square root of 13315439 is about 3649.0326115287. The cubic root of 13315439 is about 237.0200924173.

The spelling of 13315439 in words is "thirteen million, three hundred fifteen thousand, four hundred thirty-nine".