13889535 has 16 divisors (see below), whose sum is σ = 24243840. Its totient is φ = 6734240.

The previous prime is 13889531. The next prime is 13889567. The reversal of 13889535 is 53598831.

It is not a de Polignac number, because 13889535 - 2² = 13889531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41925 + ... + 42254.

It is an arithmetic number, because the mean of its divisors is an integer number (1515240).

Almost surely, 2^13889535 is an apocalyptic number.

13889535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13889535 is a deficient number, since it is larger than the sum of its proper divisors (10354305).

13889535 is a wasteful number, since it uses less digits than its factorization.

13889535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84198.

The product of its digits is 129600, while the sum is 42.

The square root of 13889535 is about 3726.8666463935. The cubic root of 13889535 is about 240.3786557407.

The spelling of 13889535 in words is "thirteen million, eight hundred eighty-nine thousand, five hundred thirty-five".