13890679 has 6 divisors (see below), whose sum is σ = 15268400. Its totient is φ = 12627780.

The previous prime is 13890661. The next prime is 13890703. The reversal of 13890679 is 97609831.

It is not a de Polignac number, because 13890679 - 2⁹ = 13890167 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 (13890619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57279 + ... + 57520.

Almost surely, 2^13890679 is an apocalyptic number.

13890679 is a deficient number, since it is larger than the sum of its proper divisors (1377721).

13890679 is a wasteful number, since it uses less digits than its factorization.

13890679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114821 (or 114810 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 13890679 is about 3727.0201233693. The cubic root of 13890679 is about 240.3852550888.

The spelling of 13890679 in words is "thirteen million, eight hundred ninety thousand, six hundred seventy-nine".