440800009 has 16 divisors (see below), whose sum is σ = 486950464. Its totient is φ = 396446400.

The previous prime is 440799977. The next prime is 440800043. The reversal of 440800009 is 900008044.

It is a cyclic number.

It is not a de Polignac number, because 440800009 - 2⁵ = 440799977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440800069) 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 15 ways as a sum of consecutive naturals, for example, 318499 + ... + 319879.

It is an arithmetic number, because the mean of its divisors is an integer number (30434404).

Almost surely, 2^440800009 is an apocalyptic number.

It is an amenable number.

440800009 is a deficient number, since it is larger than the sum of its proper divisors (46150455).

440800009 is a wasteful number, since it uses less digits than its factorization.

440800009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 440800009 is about 20995.2377695515. The cubic root of 440800009 is about 761.0511821763.

The spelling of 440800009 in words is "four hundred forty million, eight hundred thousand, nine".