440440444 has 24 divisors (see below), whose sum is σ = 812019600. Its totient is φ = 208454400.

The previous prime is 440440423. The next prime is 440440447. The reversal of 440440444 is 444044044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440440447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 155844 + ... + 158644.

It is an arithmetic number, because the mean of its divisors is an integer number (33834150).

Almost surely, 2^440440444 is an apocalyptic number.

It is an amenable number.

440440444 is a deficient number, since it is larger than the sum of its proper divisors (371579156).

440440444 is a wasteful number, since it uses less digits than its factorization.

440440444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893 (or 4891 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 440440444 is about 20986.6730093171. The cubic root of 440440444 is about 760.8441935177.

Adding to 440440444 its reverse (444044044), we get a palindrome (884484488).

The spelling of 440440444 in words is "four hundred forty million, four hundred forty thousand, four hundred forty-four".