840499200000 has 960 divisors, whose sum is σ = 3276587160000. Its totient is φ = 212336640000.

The previous prime is 840499199977. The next prime is 840499200007. The reversal of 840499200000 is 2994048.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (840499200007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44236799991 + ... + 44236800009.

It is an arithmetic number, because the mean of its divisors is an integer number (3413111625).

Almost surely, 2^840499200000 is an apocalyptic number.

840499200000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840499200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638293580000).

840499200000 is an abundant number, since it is smaller than the sum of its proper divisors (2436087960000).

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

840499200000 is an frugal number, since it uses more digits than its factorization.

840499200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 840499200000 in words is "eight hundred forty billion, four hundred ninety-nine million, two hundred thousand".