13839969 has 16 divisors (see below), whose sum is σ = 21680064. Its totient is φ = 7742400.

The previous prime is 13839953. The next prime is 13839971. The reversal of 13839969 is 96993831.

It is a happy number.

13839969 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13839969 - 2⁴ = 13839953 is a prime.

It is a super-2 number, since 2×13839969² = 383089483841922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13839569) 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, 15702 + ... + 16559.

It is an arithmetic number, because the mean of its divisors is an integer number (1355004).

Almost surely, 2^13839969 is an apocalyptic number.

It is an amenable number.

13839969 is a deficient number, since it is larger than the sum of its proper divisors (7840095).

13839969 is a wasteful number, since it uses less digits than its factorization.

13839969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32288.

The product of its digits is 314928, while the sum is 48.

The square root of 13839969 is about 3720.2108811195. The cubic root of 13839969 is about 240.0923776331.

The spelling of 13839969 in words is "thirteen million, eight hundred thirty-nine thousand, nine hundred sixty-nine".