13189717 has 4 divisors (see below), whose sum is σ = 13216140. Its totient is φ = 13163296.

The previous prime is 13189703. The next prime is 13189721. The reversal of 13189717 is 71798131.

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 9480241 + 3709476 = 3079^2 + 1926^2 .

It is a cyclic number.

It is not a de Polignac number, because 13189717 - 2²³ = 4801109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13189747) 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, 12448 + ... + 13465.

It is an arithmetic number, because the mean of its divisors is an integer number (3304035).

Almost surely, 2^13189717 is an apocalyptic number.

It is an amenable number.

13189717 is a deficient number, since it is larger than the sum of its proper divisors (26423).

13189717 is an equidigital number, since it uses as much as digits as its factorization.

13189717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26422.

The product of its digits is 10584, while the sum is 37.

The square root of 13189717 is about 3631.7649979039. The cubic root of 13189717 is about 236.2717651159.

The spelling of 13189717 in words is "thirteen million, one hundred eighty-nine thousand, seven hundred seventeen".