13879557 has 24 divisors (see below), whose sum is σ = 22027200. Its totient is φ = 8382528.

The previous prime is 13879553. The next prime is 13879571. The reversal of 13879557 is 75597831.

13879557 is a `hidden beast` number, since 13 + 87 + 9 + 557 = 666.

It is not a de Polignac number, because 13879557 - 2² = 13879553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13879553) 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 23 ways as a sum of consecutive naturals, for example, 2169 + ... + 5697.

It is an arithmetic number, because the mean of its divisors is an integer number (917800).

Almost surely, 2^13879557 is an apocalyptic number.

It is an amenable number.

13879557 is a deficient number, since it is larger than the sum of its proper divisors (8147643).

13879557 is a wasteful number, since it uses less digits than its factorization.

13879557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577 (or 3574 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 13879557 is about 3725.5277478500. The cubic root of 13879557 is about 240.3210806718.

The spelling of 13879557 in words is "thirteen million, eight hundred seventy-nine thousand, five hundred fifty-seven".