13868559 has 12 divisors (see below), whose sum is σ = 20108296. Its totient is φ = 9210672.

The previous prime is 13868551. The next prime is 13868567. The reversal of 13868559 is 95586831.

13868559 is a `hidden beast` number, since 1 + 38 + 68 + 559 = 666.

It is an interprime number because it is at equal distance from previous prime (13868551) and next prime (13868567).

It is not a de Polignac number, because 13868559 - 2³ = 13868551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13868551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289 + ... + 5274.

Almost surely, 2^13868559 is an apocalyptic number.

13868559 is a deficient number, since it is larger than the sum of its proper divisors (6239737).

13868559 is a wasteful number, since it uses less digits than its factorization.

13868559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846 (or 5843 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 13868559 is about 3724.0514228458. The cubic root of 13868559 is about 240.2575880195.

The spelling of 13868559 in words is "thirteen million, eight hundred sixty-eight thousand, five hundred fifty-nine".