804400000000 has 198 divisors, whose sum is σ = 2011016548484. Its totient is φ = 321600000000.

The previous prime is 804399999937. The next prime is 804400000031. The reversal of 804400000000 is 4408.

804400000000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a self number, because there is not a number n which added to its sum of digits gives 804400000000.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 399998995 + ... + 400001005.

Almost surely, 2^804400000000 is an apocalyptic number.

804400000000 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 804400000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005508274242).

804400000000 is an abundant number, since it is smaller than the sum of its proper divisors (1206616548484).

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

804400000000 is an frugal number, since it uses more digits than its factorization.

804400000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 804400000000 its reverse (4408), we get a palindrome (804400004408).

The spelling of 804400000000 in words is "eight hundred four billion, four hundred million", and thus it is an aban number.