856287359 has 2 divisors, whose sum is σ = 856287360. Its totient is φ = 856287358.

The previous prime is 856287319. The next prime is 856287361. The reversal of 856287359 is 953782658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 856287359 - 2¹⁶ = 856221823 is a prime.

Together with 856287361, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856287359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856287319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428143679 + 428143680.

It is an arithmetic number, because the mean of its divisors is an integer number (428143680).

Almost surely, 2^856287359 is an apocalyptic number.

856287359 is a deficient number, since it is larger than the sum of its proper divisors (1).

856287359 is an equidigital number, since it uses as much as digits as its factorization.

856287359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 53.

The square root of 856287359 is about 29262.3881287909. The cubic root of 856287359 is about 949.5981158851.

The spelling of 856287359 in words is "eight hundred fifty-six million, two hundred eighty-seven thousand, three hundred fifty-nine".