804400000 has 96 divisors (see below), whose sum is σ = 2004012360. Its totient is φ = 321600000.

The previous prime is 804399991. The next prime is 804400007. The reversal of 804400000 is 4408.

804400000 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (804400007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398995 + ... + 401005.

Almost surely, 2^804400000 is an apocalyptic number.

804400000 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 804400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002006180).

804400000 is an abundant number, since it is smaller than the sum of its proper divisors (1199612360).

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

804400000 is an frugal number, since it uses more digits than its factorization.

804400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2018 counting only the distinct ones).

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

The square root of 804400000 is about 28361.9463365969. The cubic root of 804400000 is about 930.0165719481.

Adding to 804400000 its reverse (4408), we get a palindrome (804404408).

The spelling of 804400000 in words is "eight hundred four million, four hundred thousand".