13838569 has 4 divisors (see below), whose sum is σ = 13898196. Its totient is φ = 13778944.

The previous prime is 13838563. The next prime is 13838579. The reversal of 13838569 is 96583831.

13838569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96583831 = 23 ⋅4199297.

It can be written as a sum of positive squares in 2 ways, for example, as 2849344 + 10989225 = 1688^2 + 3315^2 .

It is a 5-Lehmer number, since φ(13838569) divides (13838569-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 13838569 - 2¹⁵ = 13805801 is a prime.

It is a super-2 number, since 2×13838569² = 383011983935522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13838563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29464 + ... + 29929.

It is an arithmetic number, because the mean of its divisors is an integer number (3474549).

It is a Poulet number, since it divides 2^13838568-1.

Almost surely, 2^13838569 is an apocalyptic number.

It is an amenable number.

13838569 is a deficient number, since it is larger than the sum of its proper divisors (59627).

13838569 is an equidigital number, since it uses as much as digits as its factorization.

13838569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59626.

The product of its digits is 155520, while the sum is 43.

The square root of 13838569 is about 3720.0227149844. The cubic root of 13838569 is about 240.0842817416.

The spelling of 13838569 in words is "thirteen million, eight hundred thirty-eight thousand, five hundred sixty-nine".