844426836 has 96 divisors (see below), whose sum is σ = 2394255360. Its totient is φ = 255247200.

The previous prime is 844426829. The next prime is 844426841. The reversal of 844426836 is 638624448.

844426836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 844426791 and 844426800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 720531 + ... + 721701.

It is an arithmetic number, because the mean of its divisors is an integer number (24940160).

Almost surely, 2^844426836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844426836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197127680).

844426836 is an abundant number, since it is smaller than the sum of its proper divisors (1549828524).

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

844426836 is a wasteful number, since it uses less digits than its factorization.

844426836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802 (or 1794 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The square root of 844426836 is about 29059.0233146264. The cubic root of 844426836 is about 945.1933894964.

The spelling of 844426836 in words is "eight hundred forty-four million, four hundred twenty-six thousand, eight hundred thirty-six".