13639269 has 16 divisors (see below), whose sum is σ = 20854400. Its totient is φ = 7767360.

The previous prime is 13639243. The next prime is 13639277. The reversal of 13639269 is 96293631.

It is not a de Polignac number, because 13639269 - 2⁵ = 13639237 is a prime.

It is a super-2 number, since 2×13639269² = 372059317708722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13639229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6399 + ... + 8259.

It is an arithmetic number, because the mean of its divisors is an integer number (1303400).

Almost surely, 2^13639269 is an apocalyptic number.

It is an amenable number.

13639269 is a deficient number, since it is larger than the sum of its proper divisors (7215131).

13639269 is a wasteful number, since it uses less digits than its factorization.

13639269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its digits is 52488, while the sum is 39.

The square root of 13639269 is about 3693.1380965244. The cubic root of 13639269 is about 238.9261572847.

The spelling of 13639269 in words is "thirteen million, six hundred thirty-nine thousand, two hundred sixty-nine".