13718539 has 4 divisors (see below), whose sum is σ = 13840056. Its totient is φ = 13597024.

The previous prime is 13718531. The next prime is 13718563. The reversal of 13718539 is 93581731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93581731 = 1319 ⋅70949.

It is a cyclic number.

It is not a de Polignac number, because 13718539 - 2³ = 13718531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13718498 and 13718507.

It is not an unprimeable number, because it can be changed into a prime (13718531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60589 + ... + 60814.

It is an arithmetic number, because the mean of its divisors is an integer number (3460014).

Almost surely, 2^13718539 is an apocalyptic number.

13718539 is a deficient number, since it is larger than the sum of its proper divisors (121517).

13718539 is a wasteful number, since it uses less digits than its factorization.

13718539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121516.

The product of its digits is 22680, while the sum is 37.

The square root of 13718539 is about 3703.8546137774. The cubic root of 13718539 is about 239.3881346996.

The spelling of 13718539 in words is "thirteen million, seven hundred eighteen thousand, five hundred thirty-nine".