12723859 has 4 divisors (see below), whose sum is σ = 12732160. Its totient is φ = 12715560.

The previous prime is 12723833. The next prime is 12723889. The reversal of 12723859 is 95832721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 95832721 = 73 ⋅1312777.

It is a cyclic number.

It is not a de Polignac number, because 12723859 - 2⁷ = 12723731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12723889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (3183040).

Almost surely, 2^12723859 is an apocalyptic number.

12723859 is a deficient number, since it is larger than the sum of its proper divisors (8301).

12723859 is an equidigital number, since it uses as much as digits as its factorization.

12723859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8300.

The product of its digits is 30240, while the sum is 37.

The square root of 12723859 is about 3567.0518639347. The cubic root of 12723859 is about 233.4566679033.

The spelling of 12723859 in words is "twelve million, seven hundred twenty-three thousand, eight hundred fifty-nine".