12856943 has 8 divisors (see below), whose sum is σ = 14052096. Its totient is φ = 11666200.

The previous prime is 12856933. The next prime is 12856969. The reversal of 12856943 is 34965821.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12856943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12856897 and 12856906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856933) 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 in 7 ways as a sum of consecutive naturals, for example, 9380 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (1756512).

Almost surely, 2^12856943 is an apocalyptic number.

12856943 is a deficient number, since it is larger than the sum of its proper divisors (1195153).

12856943 is a wasteful number, since it uses less digits than its factorization.

12856943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205.

The product of its digits is 51840, while the sum is 38.

The square root of 12856943 is about 3585.6579591478. The cubic root of 12856943 is about 234.2677858190.

It can be divided in two parts, 1285 and 6943, that added together give a palindrome (8228).

The spelling of 12856943 in words is "twelve million, eight hundred fifty-six thousand, nine hundred forty-three".