855798311 has 8 divisors (see below), whose sum is σ = 870945600. Its totient is φ = 840780288.

The previous prime is 855798301. The next prime is 855798353. The reversal of 855798311 is 113897558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855798311 is a prime.

It is a super-2 number, since 2×855798311² = 1464781498220905442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855798301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18911 + ... + 45488.

It is an arithmetic number, because the mean of its divisors is an integer number (108868200).

Almost surely, 2^855798311 is an apocalyptic number.

855798311 is a deficient number, since it is larger than the sum of its proper divisors (15147289).

855798311 is a wasteful number, since it uses less digits than its factorization.

855798311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64633.

The product of its digits is 302400, while the sum is 47.

The square root of 855798311 is about 29254.0306795491. The cubic root of 855798311 is about 949.4173013908.

The spelling of 855798311 in words is "eight hundred fifty-five million, seven hundred ninety-eight thousand, three hundred eleven".