844044440 has 32 divisors (see below), whose sum is σ = 1960364160. Its totient is φ = 326726400.

The previous prime is 844044427. The next prime is 844044473. The reversal of 844044440 is 44440448.

It is a super-2 number, since 2×844044440² = 1424822033389827200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 844044397 and 844044406.

It is a congruent 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, 339101 + ... + 341580.

It is an arithmetic number, because the mean of its divisors is an integer number (61261380).

Almost surely, 2^844044440 is an apocalyptic number.

It is an amenable number.

844044440 is an abundant number, since it is smaller than the sum of its proper divisors (1116319720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844044440 is a wasteful number, since it uses less digits than its factorization.

844044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680723 (or 680719 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

The square root of 844044440 is about 29052.4429265423. The cubic root of 844044440 is about 945.0506920168.

Adding to 844044440 its reverse (44440448), we get a palindrome (888484888).

The spelling of 844044440 in words is "eight hundred forty-four million, forty-four thousand, four hundred forty".