4441489661 has 16 divisors (see below), whose sum is σ = 5094294144. Its totient is φ = 3793293504.

The previous prime is 4441489627. The next prime is 4441489669. The reversal of 4441489661 is 1669841444.

It is not a de Polignac number, because 4441489661 - 2⁶ = 4441489597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441489669) 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 15 ways as a sum of consecutive naturals, for example, 4063031 + ... + 4064123.

It is an arithmetic number, because the mean of its divisors is an integer number (318393384).

Almost surely, 2^4441489661 is an apocalyptic number.

It is an amenable number.

4441489661 is a deficient number, since it is larger than the sum of its proper divisors (652804483).

4441489661 is a wasteful number, since it uses less digits than its factorization.

4441489661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660.

The product of its digits is 663552, while the sum is 47.

The square root of 4441489661 is about 66644.5021063253. The cubic root of 4441489661 is about 1643.7769459822.

The spelling of 4441489661 in words is "four billion, four hundred forty-one million, four hundred eighty-nine thousand, six hundred sixty-one".