13955717 has 2 divisors, whose sum is σ = 13955718. Its totient is φ = 13955716.

The previous prime is 13955713. The next prime is 13955719. The reversal of 13955717 is 71755931.

13955717 is digitally balanced in base 2, because in such base 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., 12630916 + 1324801 = 3554^2 + 1151^2 .

It is a cyclic number.

It is not a de Polignac number, because 13955717 - 2² = 13955713 is a prime.

Together with 13955719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13955713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6977858 + 6977859.

It is an arithmetic number, because the mean of its divisors is an integer number (6977859).

Almost surely, 2^13955717 is an apocalyptic number.

It is an amenable number.

13955717 is a deficient number, since it is larger than the sum of its proper divisors (1).

13955717 is an equidigital number, since it uses as much as digits as its factorization.

13955717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075, while the sum is 38.

The square root of 13955717 is about 3735.7351351508. The cubic root of 13955717 is about 240.7598429465.

The spelling of 13955717 in words is "thirteen million, nine hundred fifty-five thousand, seven hundred seventeen".