13808917 has 2 divisors, whose sum is σ = 13808918. Its totient is φ = 13808916.

The previous prime is 13808911. The next prime is 13808941. The reversal of 13808917 is 71980831.

13808917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7043716 + 6765201 = 2654^2 + 2601^2 .

It is a cyclic number.

It is not a de Polignac number, because 13808917 - 2³ = 13808909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13808911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904458 + 6904459.

It is an arithmetic number, because the mean of its divisors is an integer number (6904459).

Almost surely, 2^13808917 is an apocalyptic number.

It is an amenable number.

13808917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13808917 is an equidigital number, since it uses as much as digits as its factorization.

13808917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 13808917 is about 3716.0351182409. The cubic root of 13808917 is about 239.9126823560.

The spelling of 13808917 in words is "thirteen million, eight hundred eight thousand, nine hundred seventeen".