12859559 has 4 divisors (see below), whose sum is σ = 12938616. Its totient is φ = 12780504.

The previous prime is 12859547. The next prime is 12859577. The reversal of 12859559 is 95595821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12859559 - 2⁴ = 12859543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12859589) 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 in 3 ways as a sum of consecutive naturals, for example, 39284 + ... + 39609.

It is an arithmetic number, because the mean of its divisors is an integer number (3234654).

Almost surely, 2^12859559 is an apocalyptic number.

12859559 is a deficient number, since it is larger than the sum of its proper divisors (79057).

12859559 is an equidigital number, since it uses as much as digits as its factorization.

12859559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79056.

The product of its digits is 162000, while the sum is 44.

The square root of 12859559 is about 3586.0227272007. The cubic root of 12859559 is about 234.2836735503.

The spelling of 12859559 in words is "twelve million, eight hundred fifty-nine thousand, five hundred fifty-nine".