12457859 has 2 divisors, whose sum is σ = 12457860. Its totient is φ = 12457858.

The previous prime is 12457817. The next prime is 12457871. The reversal of 12457859 is 95875421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12457859 - 2¹⁶ = 12392323 is a prime.

It is not a weakly prime, because it can be changed into another prime (12457759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228929 + 6228930.

It is an arithmetic number, because the mean of its divisors is an integer number (6228930).

Almost surely, 2^12457859 is an apocalyptic number.

12457859 is a deficient number, since it is larger than the sum of its proper divisors (1).

12457859 is an equidigital number, since it uses as much as digits as its factorization.

12457859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 12457859 is about 3529.5692371733. The cubic root of 12457859 is about 231.8183464587.

The spelling of 12457859 in words is "twelve million, four hundred fifty-seven thousand, eight hundred fifty-nine".