4442440 has 64 divisors (see below), whose sum is σ = 10886400. Its totient is φ = 1625088.

The previous prime is 4442437. The next prime is 4442441. The reversal of 4442440 is 442444.

It is not an unprimeable number, because it can be changed into a prime (4442441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31891 + ... + 32029.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

Almost surely, 2^4442440 is an apocalyptic number.

4442440 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 4442440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5443200).

4442440 is an abundant number, since it is smaller than the sum of its proper divisors (6443960).

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

4442440 is a wasteful number, since it uses less digits than its factorization.

4442440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 4442440 is about 2107.7096574244. The cubic root of 4442440 is about 164.3894176465.

Adding to 4442440 its reverse (442444), we get a palindrome (4884884).

The spelling of 4442440 in words is "four million, four hundred forty-two thousand, four hundred forty".