14639539 has 2 divisors, whose sum is σ = 14639540. Its totient is φ = 14639538.

The previous prime is 14639509. The next prime is 14639543. The reversal of 14639539 is 93593641.

It is a strong prime.

It is an emirp because it is prime and its reverse (93593641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14639539 - 2⁵ = 14639507 is a prime.

It is a super-2 number, since 2×14639539² = 428632204265042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14639509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7319769 + 7319770.

It is an arithmetic number, because the mean of its divisors is an integer number (7319770).

Almost surely, 2^14639539 is an apocalyptic number.

14639539 is a deficient number, since it is larger than the sum of its proper divisors (1).

14639539 is an equidigital number, since it uses as much as digits as its factorization.

14639539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 14639539 is about 3826.1650513275. The cubic root of 14639539 is about 244.6296723643.

The spelling of 14639539 in words is "fourteen million, six hundred thirty-nine thousand, five hundred thirty-nine".