13539699 has 6 divisors (see below), whose sum is σ = 19557356. Its totient is φ = 9026460.

The previous prime is 13539683. The next prime is 13539719. The reversal of 13539699 is 99693531.

13539699 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 13539699 - 2⁴ = 13539683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13539899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752197 + ... + 752214.

Almost surely, 2^13539699 is an apocalyptic number.

13539699 is a deficient number, since it is larger than the sum of its proper divisors (6017657).

13539699 is a wasteful number, since it uses less digits than its factorization.

13539699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504417 (or 1504414 counting only the distinct ones).

The product of its digits is 196830, while the sum is 45.

The square root of 13539699 is about 3679.6329980040. The cubic root of 13539699 is about 238.3433302516.

The spelling of 13539699 in words is "thirteen million, five hundred thirty-nine thousand, six hundred ninety-nine".