13979700 has 162 divisors, whose sum is σ = 51133446. Its totient is φ = 3185280.

The previous prime is 13979689. The next prime is 13979717. The reversal of 13979700 is 797931.

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 13972644 = 84^2 + 3738^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 43942 + ... + 44258.

Almost surely, 2^13979700 is an apocalyptic number.

13979700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13979700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25566723).

13979700 is an abundant number, since it is smaller than the sum of its proper divisors (37153746).

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

13979700 is a wasteful number, since it uses less digits than its factorization.

13979700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 13979700 is about 3738.9437011006. The cubic root of 13979700 is about 240.8976798591.

The spelling of 13979700 in words is "thirteen million, nine hundred seventy-nine thousand, seven hundred".