856850383 has 2 divisors, whose sum is σ = 856850384. Its totient is φ = 856850382.

The previous prime is 856850381. The next prime is 856850453. The reversal of 856850383 is 383058658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 856850383 - 2¹ = 856850381 is a prime.

Together with 856850381, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856850381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428425191 + 428425192.

It is an arithmetic number, because the mean of its divisors is an integer number (428425192).

Almost surely, 2^856850383 is an apocalyptic number.

856850383 is a deficient number, since it is larger than the sum of its proper divisors (1).

856850383 is an equidigital number, since it uses as much as digits as its factorization.

856850383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 856850383 is about 29272.0068153859. The cubic root of 856850383 is about 949.8061961076.

The spelling of 856850383 in words is "eight hundred fifty-six million, eight hundred fifty thousand, three hundred eighty-three".