1000440444 has 24 divisors (see below), whose sum is σ = 2334890880. Its totient is φ = 333404464.

The previous prime is 1000440439. The next prime is 1000440457. The reversal of 1000440444 is 4440440001.

1000440444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1000440444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77827 + ... + 89765.

It is an arithmetic number, because the mean of its divisors is an integer number (97287120).

Almost surely, 2^1000440444 is an apocalyptic number.

It is an amenable number.

1000440444 is an abundant number, since it is smaller than the sum of its proper divisors (1334450436).

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

1000440444 is a wasteful number, since it uses less digits than its factorization.

1000440444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18929 (or 18927 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1000440444 is about 31629.7398661450. The cubic root of 1000440444 is about 1000.1467931174.

Adding to 1000440444 its reverse (4440440001), we get a palindrome (5440880445).

The spelling of 1000440444 in words is "one billion, four hundred forty thousand, four hundred forty-four".