844840444 has 24 divisors (see below), whose sum is σ = 1694407680. Its totient is φ = 361061616.

The previous prime is 844840429. The next prime is 844840501. The reversal of 844840444 is 444048448.

It is a junction number, because it is equal to n+sod(n) for n = 844840397 and 844840406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31972 + ... + 52075.

It is an arithmetic number, because the mean of its divisors is an integer number (70600320).

Almost surely, 2^844840444 is an apocalyptic number.

It is an amenable number.

844840444 is an abundant number, since it is smaller than the sum of its proper divisors (849567236).

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

844840444 is a wasteful number, since it uses less digits than its factorization.

844840444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84417 (or 84415 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 40.

The square root of 844840444 is about 29066.1391312985. The cubic root of 844840444 is about 945.3476857676.

It can be divided in two parts, 8448404 and 44, that added together give a palindrome (8448448).

The spelling of 844840444 in words is "eight hundred forty-four million, eight hundred forty thousand, four hundred forty-four".