13979740 has 24 divisors (see below), whose sum is σ = 30371040. Its totient is φ = 5398848.

The previous prime is 13979723. The next prime is 13979741. The reversal of 13979740 is 4797931.

It is a junction number, because it is equal to n+sod(n) for n = 13979693 and 13979702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13979741) 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 7 ways as a sum of consecutive naturals, for example, 11472 + ... + 12631.

It is an arithmetic number, because the mean of its divisors is an integer number (1265460).

Almost surely, 2^13979740 is an apocalyptic number.

13979740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13979740 is an abundant number, since it is smaller than the sum of its proper divisors (16391300).

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

13979740 is a wasteful number, since it uses less digits than its factorization.

13979740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24141 (or 24139 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 13979740 is about 3738.9490502011. The cubic root of 13979740 is about 240.8979096184.

The spelling of 13979740 in words is "thirteen million, nine hundred seventy-nine thousand, seven hundred forty".