13979860 has 24 divisors (see below), whose sum is σ = 30635136. Its totient is φ = 5348640.

The previous prime is 13979857. The next prime is 13979921. The reversal of 13979860 is 6897931.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14736 + ... + 15655.

It is an arithmetic number, because the mean of its divisors is an integer number (1276464).

Almost surely, 2^13979860 is an apocalyptic number.

13979860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13979860 is an abundant number, since it is smaller than the sum of its proper divisors (16655276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13979860 is a wasteful number, since it uses less digits than its factorization.

13979860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30423 (or 30421 counting only the distinct ones).

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

The square root of 13979860 is about 3738.9650974568. The cubic root of 13979860 is about 240.8985988936.

The spelling of 13979860 in words is "thirteen million, nine hundred seventy-nine thousand, eight hundred sixty".