13888817 has 2 divisors, whose sum is σ = 13888818. Its totient is φ = 13888816.

The previous prime is 13888799. The next prime is 13888841. The reversal of 13888817 is 71888831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 2062096 = 3439^2 + 1436^2 .

It is a cyclic number.

It is not a de Polignac number, because 13888817 - 2⁸ = 13888561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13888117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6944408 + 6944409.

It is an arithmetic number, because the mean of its divisors is an integer number (6944409).

Almost surely, 2^13888817 is an apocalyptic number.

It is an amenable number.

13888817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13888817 is an equidigital number, since it uses as much as digits as its factorization.

13888817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 44.

The square root of 13888817 is about 3726.7703175806. The cubic root of 13888817 is about 240.3745136570.

The spelling of 13888817 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred seventeen".