854853991 has 2 divisors, whose sum is σ = 854853992. Its totient is φ = 854853990.

The previous prime is 854853953. The next prime is 854854037. The reversal of 854853991 is 199358458.

854853991 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 not a de Polignac number, because 854853991 - 2⁷ = 854853863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854853911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427426995 + 427426996.

It is an arithmetic number, because the mean of its divisors is an integer number (427426996).

Almost surely, 2^854853991 is an apocalyptic number.

854853991 is a deficient number, since it is larger than the sum of its proper divisors (1).

854853991 is an equidigital number, since it uses as much as digits as its factorization.

854853991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 52.

The square root of 854853991 is about 29237.8862266067. The cubic root of 854853991 is about 949.0679652989.

The spelling of 854853991 in words is "eight hundred fifty-four million, eight hundred fifty-three thousand, nine hundred ninety-one".