844218441 has 24 divisors (see below), whose sum is σ = 1361227296. Its totient is φ = 499746240.

The previous prime is 844218439. The next prime is 844218461. The reversal of 844218441 is 144812448.

It is not a de Polignac number, because 844218441 - 2¹ = 844218439 is a prime.

It is a super-2 number, since 2×844218441² = 1425409552248940962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 844218396 and 844218405.

It is not an unprimeable number, because it can be changed into a prime (844218461) 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 23 ways as a sum of consecutive naturals, for example, 94900 + ... + 103413.

It is an arithmetic number, because the mean of its divisors is an integer number (56717804).

Almost surely, 2^844218441 is an apocalyptic number.

It is an amenable number.

844218441 is a deficient number, since it is larger than the sum of its proper divisors (517008855).

844218441 is a wasteful number, since it uses less digits than its factorization.

844218441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198373 (or 198370 counting only the distinct ones).

The product of its digits is 32768, while the sum is 36.

The square root of 844218441 is about 29055.4373740957. The cubic root of 844218441 is about 945.1156287504.

The spelling of 844218441 in words is "eight hundred forty-four million, two hundred eighteen thousand, four hundred forty-one".