80004440840 has 16 divisors (see below), whose sum is σ = 180009991980. Its totient is φ = 32001776320.

The previous prime is 80004440821. The next prime is 80004440891. The reversal of 80004440840 is 4804440008.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78766667716 + 1237773124 = 280654^2 + 35182^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80004440797 and 80004440806.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1000055471 + ... + 1000055550.

Almost surely, 2^80004440840 is an apocalyptic number.

It is an amenable number.

80004440840 is an abundant number, since it is smaller than the sum of its proper divisors (100005551140).

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

80004440840 is a wasteful number, since it uses less digits than its factorization.

80004440840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000111032 (or 2000111028 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 80004440840 its reverse (4804440008), we get a palindrome (84808880848).

The spelling of 80004440840 in words is "eighty billion, four million, four hundred forty thousand, eight hundred forty".