4443664 has 45 divisors (see below), whose sum is σ = 9450381. Its totient is φ = 2023680.

The previous prime is 4443653. The next prime is 4443689. The reversal of 4443664 is 4663444.

The square root of 4443664 is 2108.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3459600 + 984064 = 1860^2 + 992^2 .

It is a super-2 number, since 2×4443664² = 39492299489792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 143329 + ... + 143359.

Almost surely, 2^4443664 is an apocalyptic number.

4443664 is the 2108-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4443664

4443664 is an abundant number, since it is smaller than the sum of its proper divisors (5006717).

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

4443664 is a wasteful number, since it uses less digits than its factorization.

4443664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 50 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

The cubic root of 4443664 is about 164.4045140178.

The spelling of 4443664 in words is "four million, four hundred forty-three thousand, six hundred sixty-four".