13939717 has 8 divisors (see below), whose sum is σ = 15358752. Its totient is φ = 12546000.

The previous prime is 13939703. The next prime is 13939721. The reversal of 13939717 is 71793931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13939717 - 2²³ = 5551109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13939717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13939727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5163 + ... + 7384.

It is an arithmetic number, because the mean of its divisors is an integer number (1919844).

Almost surely, 2^13939717 is an apocalyptic number.

It is an amenable number.

13939717 is a deficient number, since it is larger than the sum of its proper divisors (1419035).

13939717 is a wasteful number, since it uses less digits than its factorization.

13939717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12659.

The product of its digits is 35721, while the sum is 40.

The square root of 13939717 is about 3733.5930415620. The cubic root of 13939717 is about 240.6677986951.

The spelling of 13939717 in words is "thirteen million, nine hundred thirty-nine thousand, seven hundred seventeen".