844404844040 has 16 divisors (see below), whose sum is σ = 1899910899180. Its totient is φ = 337761937600.

The previous prime is 844404844039. The next prime is 844404844061. The reversal of 844404844040 is 40448404448.

It can be written as a sum of positive squares in 2 ways, for example, as 795631888324 + 48772955716 = 891982^2 + 220846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 844404843982 and 844404844000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10555060511 + ... + 10555060590.

Almost surely, 2^844404844040 is an apocalyptic number.

It is an amenable number.

844404844040 is an abundant number, since it is smaller than the sum of its proper divisors (1055506055140).

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

844404844040 is a wasteful number, since it uses less digits than its factorization.

844404844040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21110121112 (or 21110121108 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 44.

The spelling of 844404844040 in words is "eight hundred forty-four billion, four hundred four million, eight hundred forty-four thousand, forty".