856332943 has 2 divisors, whose sum is σ = 856332944. Its totient is φ = 856332942.

The previous prime is 856332923. The next prime is 856332977. The reversal of 856332943 is 349233658.

856332943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856332943 is a prime.

It is a super-2 number, since 2×856332943² = 1466612218534082498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 856332943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856332913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428166471 + 428166472.

It is an arithmetic number, because the mean of its divisors is an integer number (428166472).

Almost surely, 2^856332943 is an apocalyptic number.

856332943 is a deficient number, since it is larger than the sum of its proper divisors (1).

856332943 is an equidigital number, since it uses as much as digits as its factorization.

856332943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 856332943 is about 29263.1670022231. The cubic root of 856332943 is about 949.6149660356.

The spelling of 856332943 in words is "eight hundred fifty-six million, three hundred thirty-two thousand, nine hundred forty-three".