4421644 has 12 divisors (see below), whose sum is σ = 7774144. Its totient is φ = 2200464.

The previous prime is 4421633. The next prime is 4421653. The reversal of 4421644 is 4461244.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587 + ... + 3370.

Almost surely, 2^4421644 is an apocalyptic number.

It is an amenable number.

4421644 is a deficient number, since it is larger than the sum of its proper divisors (3352500).

4421644 is a wasteful number, since it uses less digits than its factorization.

4421644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5184 (or 5182 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 4421644 is about 2102.7705533415. The cubic root of 4421644 is about 164.1325024747.

Adding to 4421644 its reverse (4461244), we get a palindrome (8882888).

The spelling of 4421644 in words is "four million, four hundred twenty-one thousand, six hundred forty-four".