13808689 has 2 divisors, whose sum is σ = 13808690. Its totient is φ = 13808688.

The previous prime is 13808681. The next prime is 13808699. The reversal of 13808689 is 98680831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10349089 + 3459600 = 3217^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 13808689 - 2³ = 13808681 is a prime.

It is not a weakly prime, because it can be changed into another prime (13808681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904344 + 6904345.

It is an arithmetic number, because the mean of its divisors is an integer number (6904345).

Almost surely, 2^13808689 is an apocalyptic number.

It is an amenable number.

13808689 is a deficient number, since it is larger than the sum of its proper divisors (1).

13808689 is an equidigital number, since it uses as much as digits as its factorization.

13808689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 13808689 is about 3716.0044402557. The cubic root of 13808689 is about 239.9113619437.

The spelling of 13808689 in words is "thirteen million, eight hundred eight thousand, six hundred eighty-nine".