840040444000 has 96 divisors (see below), whose sum is σ = 2064285149472. Its totient is φ = 335966400000.

The previous prime is 840040443989. The next prime is 840040444037. The reversal of 840040444000 is 444040048.

It is a self number, because there is not a number n which added to its sum of digits gives 840040444000.

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 15 ways as a sum of consecutive naturals, for example, 39593395 + ... + 39614605.

It is an arithmetic number, because the mean of its divisors is an integer number (21502970307).

Almost surely, 2^840040444000 is an apocalyptic number.

840040444000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

840040444000 is an abundant number, since it is smaller than the sum of its proper divisors (1224244705472).

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

840040444000 is a wasteful number, since it uses less digits than its factorization.

840040444000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31137 (or 31119 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 840040444000 its reverse (444040048), we get a palindrome (840484484048).

The spelling of 840040444000 in words is "eight hundred forty billion, forty million, four hundred forty-four thousand".