444005644 has 12 divisors (see below), whose sum is σ = 780434424. Its totient is φ = 221024384.

The previous prime is 444005633. The next prime is 444005647. The reversal of 444005644 is 446500444.

It is not an unprimeable number, because it can be changed into a prime (444005647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 243589 + ... + 245404.

It is an arithmetic number, because the mean of its divisors is an integer number (65036202).

Almost surely, 2^444005644 is an apocalyptic number.

It is an amenable number.

444005644 is a deficient number, since it is larger than the sum of its proper divisors (336428780).

444005644 is a wasteful number, since it uses less digits than its factorization.

444005644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489224 (or 489222 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 444005644 is about 21071.4414314731. The cubic root of 444005644 is about 762.8915951106.

The spelling of 444005644 in words is "four hundred forty-four million, five thousand, six hundred forty-four".