13916887 has 2 divisors, whose sum is σ = 13916888. Its totient is φ = 13916886.

The previous prime is 13916879. The next prime is 13916893. The reversal of 13916887 is 78861931.

13916887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78861931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13916887 - 2³ = 13916879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13916827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6958443 + 6958444.

It is an arithmetic number, because the mean of its divisors is an integer number (6958444).

Almost surely, 2^13916887 is an apocalyptic number.

13916887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13916887 is an equidigital number, since it uses as much as digits as its factorization.

13916887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 13916887 is about 3730.5344121185. The cubic root of 13916887 is about 240.5363410260.

The spelling of 13916887 in words is "thirteen million, nine hundred sixteen thousand, eight hundred eighty-seven".