13868887 has 2 divisors, whose sum is σ = 13868888. Its totient is φ = 13868886.

The previous prime is 13868863. The next prime is 13868893. The reversal of 13868887 is 78886831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13868887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13868887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13868837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934443 + 6934444.

It is an arithmetic number, because the mean of its divisors is an integer number (6934444).

Almost surely, 2^13868887 is an apocalyptic number.

13868887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13868887 is an equidigital number, since it uses as much as digits as its factorization.

13868887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 13868887 is about 3724.0954606454. The cubic root of 13868887 is about 240.2594820847.

The spelling of 13868887 in words is "thirteen million, eight hundred sixty-eight thousand, eight hundred eighty-seven".