13388917 has 2 divisors, whose sum is σ = 13388918. Its totient is φ = 13388916.

The previous prime is 13388899. The next prime is 13388927. The reversal of 13388917 is 71988331.

13388917 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8071281 + 5317636 = 2841^2 + 2306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13388917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13388917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13388927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6694458 + 6694459.

It is an arithmetic number, because the mean of its divisors is an integer number (6694459).

Almost surely, 2^13388917 is an apocalyptic number.

It is an amenable number.

13388917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13388917 is an equidigital number, since it uses as much as digits as its factorization.

13388917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 13388917 is about 3659.0869079594. The cubic root of 13388917 is about 237.4552720941.

The spelling of 13388917 in words is "thirteen million, three hundred eighty-eight thousand, nine hundred seventeen".