13885897 has 2 divisors, whose sum is σ = 13885898. Its totient is φ = 13885896.

The previous prime is 13885871. The next prime is 13885901. The reversal of 13885897 is 79858831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12595401 + 1290496 = 3549^2 + 1136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13885897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13885897.

It is not a weakly prime, because it can be changed into another prime (13885097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942948 + 6942949.

It is an arithmetic number, because the mean of its divisors is an integer number (6942949).

Almost surely, 2^13885897 is an apocalyptic number.

It is an amenable number.

13885897 is a deficient number, since it is larger than the sum of its proper divisors (1).

13885897 is an equidigital number, since it uses as much as digits as its factorization.

13885897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 13885897 is about 3726.3785368639. The cubic root of 13885897 is about 240.3576669432.

The spelling of 13885897 in words is "thirteen million, eight hundred eighty-five thousand, eight hundred ninety-seven".