13818879 has 12 divisors (see below), whose sum is σ = 20288632. Its totient is φ = 9061200.

The previous prime is 13818869. The next prime is 13818887. The reversal of 13818879 is 97881831.

It is not a de Polignac number, because 13818879 - 2⁴ = 13818863 is a prime.

It is a super-2 number, since 2×13818879² = 381922833633282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13818829) 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, 12037 + ... + 13134.

Almost surely, 2^13818879 is an apocalyptic number.

13818879 is a deficient number, since it is larger than the sum of its proper divisors (6469753).

13818879 is a wasteful number, since it uses less digits than its factorization.

13818879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25238 (or 25235 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 13818879 is about 3717.3752837183. The cubic root of 13818879 is about 239.9703609232.

The spelling of 13818879 in words is "thirteen million, eight hundred eighteen thousand, eight hundred seventy-nine".