12855843 has 48 divisors (see below), whose sum is σ = 24950016. Its totient is φ = 6160320.

The previous prime is 12855833. The next prime is 12855851. The reversal of 12855843 is 34855821.

It is a happy number.

It is not a de Polignac number, because 12855843 - 2¹⁰ = 12854819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12855798 and 12855807.

It is not an unprimeable number, because it can be changed into a prime (12855823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8296 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (519792).

Almost surely, 2^12855843 is an apocalyptic number.

12855843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12855843 is a deficient number, since it is larger than the sum of its proper divisors (12094173).

12855843 is a wasteful number, since it uses less digits than its factorization.

12855843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1461 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 12855843 is about 3585.5045670031. The cubic root of 12855843 is about 234.2611045544.

The spelling of 12855843 in words is "twelve million, eight hundred fifty-five thousand, eight hundred forty-three".