13539963 has 32 divisors (see below), whose sum is σ = 19740672. Its totient is φ = 8236800.

The previous prime is 13539961. The next prime is 13539971. The reversal of 13539963 is 36993531.

It is not a de Polignac number, because 13539963 - 2¹ = 13539961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13539961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202056 + ... + 202122.

It is an arithmetic number, because the mean of its divisors is an integer number (616896).

Almost surely, 2^13539963 is an apocalyptic number.

13539963 is a deficient number, since it is larger than the sum of its proper divisors (6200709).

13539963 is a wasteful number, since it uses less digits than its factorization.

13539963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195.

The product of its digits is 65610, while the sum is 39.

The square root of 13539963 is about 3679.6688709720. The cubic root of 13539963 is about 238.3448793315.

The spelling of 13539963 in words is "thirteen million, five hundred thirty-nine thousand, nine hundred sixty-three".