13128859 has 2 divisors, whose sum is σ = 13128860. Its totient is φ = 13128858.

The previous prime is 13128833. The next prime is 13128877. The reversal of 13128859 is 95882131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13128859 - 2⁵ = 13128827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13128809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564429 + 6564430.

It is an arithmetic number, because the mean of its divisors is an integer number (6564430).

Almost surely, 2^13128859 is an apocalyptic number.

13128859 is a deficient number, since it is larger than the sum of its proper divisors (1).

13128859 is an equidigital number, since it uses as much as digits as its factorization.

13128859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 37.

The square root of 13128859 is about 3623.3767400037. The cubic root of 13128859 is about 235.9078149487.

The spelling of 13128859 in words is "thirteen million, one hundred twenty-eight thousand, eight hundred fifty-nine".