12859918 has 8 divisors (see below), whose sum is σ = 19352448. Its totient is φ = 6409104.

The previous prime is 12859907. The next prime is 12859919. The reversal of 12859918 is 81995821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12859919) 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, 9646 + ... + 10897.

It is an arithmetic number, because the mean of its divisors is an integer number (2419056).

Almost surely, 2^12859918 is an apocalyptic number.

12859918 is a deficient number, since it is larger than the sum of its proper divisors (6492530).

12859918 is a wasteful number, since it uses less digits than its factorization.

12859918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20858.

The product of its digits is 51840, while the sum is 43.

The square root of 12859918 is about 3586.0727823066. The cubic root of 12859918 is about 234.2858536939.

The spelling of 12859918 in words is "twelve million, eight hundred fifty-nine thousand, nine hundred eighteen".