4440006 has 48 divisors (see below), whose sum is σ = 10158720. Its totient is φ = 1399680.

The previous prime is 4440001. The next prime is 4440011. The reversal of 4440006 is 6000444.

It is an interprime number because it is at equal distance from previous prime (4440001) and next prime (4440011).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40680 + ... + 40788.

It is an arithmetic number, because the mean of its divisors is an integer number (211640).

Almost surely, 2^4440006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4440006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5079360).

4440006 is an abundant number, since it is smaller than the sum of its proper divisors (5718714).

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

4440006 is a wasteful number, since it uses less digits than its factorization.

4440006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4440006 is about 2107.1321743071. The cubic root of 4440006 is about 164.3593893332.

The spelling of 4440006 in words is "four million, four hundred forty thousand, six".