4443660 has 120 divisors (see below), whose sum is σ = 15083376. Its totient is φ = 1088640.

The previous prime is 4443653. The next prime is 4443689. The reversal of 4443660 is 663444.

It is a happy number.

It is a super-2 number, since 2×4443660² = 39492228391200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20955 + ... + 21165.

Almost surely, 2^4443660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4443660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7541688).

4443660 is an abundant number, since it is smaller than the sum of its proper divisors (10639716).

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

4443660 is a wasteful number, since it uses less digits than its factorization.

4443660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 4443660 is about 2107.9990512332. Note that the first 3 decimals coincide. The cubic root of 4443660 is about 164.4044646877.

The spelling of 4443660 in words is "four million, four hundred forty-three thousand, six hundred sixty".