13859660317 has 4 divisors (see below), whose sum is σ = 13863235356. Its totient is φ = 13856085280.

The previous prime is 13859660303. The next prime is 13859660357. The reversal of 13859660317 is 71306695831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11857903236 + 2001757081 = 108894^2 + 44741^2 .

It is a cyclic number.

It is not a de Polignac number, because 13859660317 - 2¹¹ = 13859658269 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13859660357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781698 + ... + 1789459.

It is an arithmetic number, because the mean of its divisors is an integer number (3465808839).

Almost surely, 2^13859660317 is an apocalyptic number.

It is an amenable number.

13859660317 is a deficient number, since it is larger than the sum of its proper divisors (3575039).

13859660317 is an equidigital number, since it uses as much as digits as its factorization.

13859660317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575038.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 13859660317 in words is "thirteen billion, eight hundred fifty-nine million, six hundred sixty thousand, three hundred seventeen".