13888879 has 2 divisors, whose sum is σ = 13888880. Its totient is φ = 13888878.

The previous prime is 13888843. The next prime is 13888933. The reversal of 13888879 is 97888831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13888879 - 2⁹ = 13888367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13888379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6944439 + 6944440.

It is an arithmetic number, because the mean of its divisors is an integer number (6944440).

Almost surely, 2^13888879 is an apocalyptic number.

13888879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13888879 is an equidigital number, since it uses as much as digits as its factorization.

13888879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 52.

The square root of 13888879 is about 3726.7786357657. The cubic root of 13888879 is about 240.3748713356.

The spelling of 13888879 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred seventy-nine".