13888499 has 2 divisors, whose sum is σ = 13888500. Its totient is φ = 13888498.

The previous prime is 13888471. The next prime is 13888519. The reversal of 13888499 is 99488831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13888499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13888799) 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, 6944249 + 6944250.

It is an arithmetic number, because the mean of its divisors is an integer number (6944250).

Almost surely, 2^13888499 is an apocalyptic number.

13888499 is a deficient number, since it is larger than the sum of its proper divisors (1).

13888499 is an equidigital number, since it uses as much as digits as its factorization.

13888499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The square root of 13888499 is about 3726.7276530490. The cubic root of 13888499 is about 240.3726790952.

The spelling of 13888499 in words is "thirteen million, eight hundred eighty-eight thousand, four hundred ninety-nine".