4440000 has 140 divisors (see below), whose sum is σ = 15076424. Its totient is φ = 1152000.

The previous prime is 4439993. The next prime is 4440001. The reversal of 4440000 is 444.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

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 19 ways as a sum of consecutive naturals, for example, 119982 + ... + 120018.

Almost surely, 2^4440000 is an apocalyptic number.

4440000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7538212).

4440000 is an abundant number, since it is smaller than the sum of its proper divisors (10636424).

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

4440000 is an equidigital number, since it uses as much as digits as its factorization.

4440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4440000 is about 2107.1307505705. The cubic root of 4440000 is about 164.3593152975.

Adding to 4440000 its reverse (444), we get a palindrome (4440444).

Multiplying 4440000 by its reverse (444), we get a square (1971360000 = 44400²).

4440000 divided by its reverse (444) gives a 4-th power (10000 = 10⁴).

The spelling of 4440000 in words is "four million, four hundred forty thousand".