13541239 has 2 divisors, whose sum is σ = 13541240. Its totient is φ = 13541238.

The previous prime is 13541237. The next prime is 13541249. The reversal of 13541239 is 93214531.

It is a weak prime.

It is an emirp because it is prime and its reverse (93214531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13541239 - 2¹ = 13541237 is a prime.

Together with 13541237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13541233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770619 + 6770620.

It is an arithmetic number, because the mean of its divisors is an integer number (6770620).

Almost surely, 2^13541239 is an apocalyptic number.

13541239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13541239 is an equidigital number, since it uses as much as digits as its factorization.

13541239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 13541239 is about 3679.8422520537. The cubic root of 13541239 is about 238.3523662676.

The spelling of 13541239 in words is "thirteen million, five hundred forty-one thousand, two hundred thirty-nine".