12813859 has 2 divisors, whose sum is σ = 12813860. Its totient is φ = 12813858.

The previous prime is 12813841. The next prime is 12813883. The reversal of 12813859 is 95831821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12813859 - 2¹¹ = 12811811 is a prime.

It is not a weakly prime, because it can be changed into another prime (12813839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406929 + 6406930.

It is an arithmetic number, because the mean of its divisors is an integer number (6406930).

Almost surely, 2^12813859 is an apocalyptic number.

12813859 is a deficient number, since it is larger than the sum of its proper divisors (1).

12813859 is an equidigital number, since it uses as much as digits as its factorization.

12813859 is an evil number, because the sum of its binary digits is even.

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

The square root of 12813859 is about 3579.6450941399. The cubic root of 12813859 is about 234.0058135259.

The spelling of 12813859 in words is "twelve million, eight hundred thirteen thousand, eight hundred fifty-nine".