13387859 has 2 divisors, whose sum is σ = 13387860. Its totient is φ = 13387858.

The previous prime is 13387849. The next prime is 13387883. The reversal of 13387859 is 95878331.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (95878331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13387859 - 2⁸ = 13387603 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13387849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6693929 + 6693930.

It is an arithmetic number, because the mean of its divisors is an integer number (6693930).

Almost surely, 2^13387859 is an apocalyptic number.

13387859 is a deficient number, since it is larger than the sum of its proper divisors (1).

13387859 is an equidigital number, since it uses as much as digits as its factorization.

13387859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 13387859 is about 3658.9423335166. The cubic root of 13387859 is about 237.4490173115.

The spelling of 13387859 in words is "thirteen million, three hundred eighty-seven thousand, eight hundred fifty-nine".