13968887 has 2 divisors, whose sum is σ = 13968888. Its totient is φ = 13968886.

The previous prime is 13968881. The next prime is 13968907. The reversal of 13968887 is 78886931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13968887 - 2¹⁴ = 13952503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13968881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6984443 + 6984444.

It is an arithmetic number, because the mean of its divisors is an integer number (6984444).

Almost surely, 2^13968887 is an apocalyptic number.

13968887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13968887 is an equidigital number, since it uses as much as digits as its factorization.

13968887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 13968887 is about 3737.4974247483. The cubic root of 13968887 is about 240.8355540983.

The spelling of 13968887 in words is "thirteen million, nine hundred sixty-eight thousand, eight hundred eighty-seven".