440400004000 has 96 divisors (see below), whose sum is σ = 1180432274112. Its totient is φ = 160145440000.

The previous prime is 440400003983. The next prime is 440400004043. The reversal of 440400004000 is 400004044.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4960546 + ... + 5048545.

It is an arithmetic number, because the mean of its divisors is an integer number (12296169522).

Almost surely, 2^440400004000 is an apocalyptic number.

440400004000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440400004000 is an abundant number, since it is smaller than the sum of its proper divisors (740032270112).

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

440400004000 is a wasteful number, since it uses less digits than its factorization.

440400004000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009127 (or 10009109 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 440400004000 its reverse (400004044), we get a palindrome (440800008044).

The spelling of 440400004000 in words is "four hundred forty billion, four hundred million, four thousand".