805853291 has 6 divisors (see below), whose sum is σ = 807569676. Its totient is φ = 804139700.

The previous prime is 805853281. The next prime is 805853299. The reversal of 805853291 is 192358508.

It is a de Polignac number, because none of the positive numbers 2^k-805853291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805853299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 829436 + ... + 830406.

It is an arithmetic number, because the mean of its divisors is an integer number (134594946).

Almost surely, 2^805853291 is an apocalyptic number.

805853291 is a deficient number, since it is larger than the sum of its proper divisors (1716385).

805853291 is an frugal number, since it uses more digits than its factorization.

805853291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 805853291 is about 28387.5552135086. Note that the first 3 decimals coincide. The cubic root of 805853291 is about 930.5763148500.

The spelling of 805853291 in words is "eight hundred five million, eight hundred fifty-three thousand, two hundred ninety-one".