844218801 has 16 divisors (see below), whose sum is σ = 1253600320. Its totient is φ = 561504960.

The previous prime is 844218779. The next prime is 844218829. The reversal of 844218801 is 108812448.

It is a happy number.

It is not a de Polignac number, because 844218801 - 2⁵ = 844218769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844218301) 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 15 ways as a sum of consecutive naturals, for example, 24415 + ... + 47796.

It is an arithmetic number, because the mean of its divisors is an integer number (78350020).

Almost surely, 2^844218801 is an apocalyptic number.

It is an amenable number.

844218801 is a deficient number, since it is larger than the sum of its proper divisors (409381519).

844218801 is a wasteful number, since it uses less digits than its factorization.

844218801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72653 (or 72647 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 844218801 is about 29055.4435691490. The cubic root of 844218801 is about 945.1157630922.

The spelling of 844218801 in words is "eight hundred forty-four million, two hundred eighteen thousand, eight hundred one".