844216868 has 24 divisors (see below), whose sum is σ = 1616039040. Its totient is φ = 382698720.

The previous prime is 844216847. The next prime is 844216931. The reversal of 844216868 is 868612448.

It is a happy number.

It is an unprimeable number.

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, 9308 + ... + 42131.

It is an arithmetic number, because the mean of its divisors is an integer number (67334960).

Almost surely, 2^844216868 is an apocalyptic number.

It is an amenable number.

844216868 is a deficient number, since it is larger than the sum of its proper divisors (771822172).

844216868 is a wasteful number, since it uses less digits than its factorization.

844216868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51827 (or 51825 counting only the distinct ones).

The product of its digits is 589824, while the sum is 47.

The square root of 844216868 is about 29055.4103051394. The cubic root of 844216868 is about 945.1150417507.

It can be divided in two parts, 844 and 216868, that added together give a palindrome (217712).

The spelling of 844216868 in words is "eight hundred forty-four million, two hundred sixteen thousand, eight hundred sixty-eight".