4000448444 has 24 divisors (see below), whose sum is σ = 7262976000. Its totient is φ = 1925961840.

The previous prime is 4000448437. The next prime is 4000448477. The reversal of 4000448444 is 4448440004.

It is a super-2 number, since 2×4000448444² = 32007175506204042272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4000448444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56384 + ... + 105735.

It is an arithmetic number, because the mean of its divisors is an integer number (302624000).

Almost surely, 2^4000448444 is an apocalyptic number.

It is an amenable number.

4000448444 is a deficient number, since it is larger than the sum of its proper divisors (3262527556).

4000448444 is a wasteful number, since it uses less digits than its factorization.

4000448444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162353 (or 162351 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

The square root of 4000448444 is about 63249.0983651151. The cubic root of 4000448444 is about 1587.4603714579.

Adding to 4000448444 its reverse (4448440004), we get a palindrome (8448888448).

The spelling of 4000448444 in words is "four billion, four hundred forty-eight thousand, four hundred forty-four".