840444844 has 24 divisors (see below), whose sum is σ = 1607534208. Its totient is φ = 382744320.

The previous prime is 840444833. The next prime is 840444883. The reversal of 840444844 is 448444048.

It is a junction number, because it is equal to n+sod(n) for n = 840444797 and 840444806.

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, 197239 + ... + 201454.

It is an arithmetic number, because the mean of its divisors is an integer number (66980592).

Almost surely, 2^840444844 is an apocalyptic number.

It is an amenable number.

840444844 is a deficient number, since it is larger than the sum of its proper divisors (767089364).

840444844 is a wasteful number, since it uses less digits than its factorization.

840444844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398745 (or 398743 counting only the distinct ones).

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

The square root of 840444844 is about 28990.4267647098. The cubic root of 840444844 is about 943.7053252305.

It can be divided in two parts, 84044 and 4844, that added together give a palindrome (88888).

The spelling of 840444844 in words is "eight hundred forty million, four hundred forty-four thousand, eight hundred forty-four".