840844444 has 24 divisors (see below), whose sum is σ = 1660604400. Its totient is φ = 369022080.

The previous prime is 840844393. The next prime is 840844447. The reversal of 840844444 is 444448048.

840844444 is a modest number, since divided by 44444 gives 8408 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 840844397 and 840844406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840844447) by changing a digit.

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, 328209 + ... + 330760.

It is an arithmetic number, because the mean of its divisors is an integer number (69191850).

Almost surely, 2^840844444 is an apocalyptic number.

It is an amenable number.

840844444 is a deficient number, since it is larger than the sum of its proper divisors (819759956).

840844444 is a wasteful number, since it uses less digits than its factorization.

840844444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659013 (or 659011 counting only the distinct ones).

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

The square root of 840844444 is about 28997.3178759691. The cubic root of 840844444 is about 943.8548670278.

The spelling of 840844444 in words is "eight hundred forty million, eight hundred forty-four thousand, four hundred forty-four".