4422440 has 96 divisors (see below), whose sum is σ = 11944800. Its totient is φ = 1457280.

The previous prime is 4422427. The next prime is 4422443. The reversal of 4422440 is 442244.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (4422443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192269 + ... + 192291.

It is an arithmetic number, because the mean of its divisors is an integer number (124425).

Almost surely, 2^4422440 is an apocalyptic number.

4422440 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 4422440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5972400).

4422440 is an abundant number, since it is smaller than the sum of its proper divisors (7522360).

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

4422440 is a wasteful number, since it uses less digits than its factorization.

4422440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4422440 is about 2102.9598189219. The cubic root of 4422440 is about 164.1423511217.

4422440 divided by its sum of digits (20) gives a palindrome (221122).

Adding to 4422440 its reverse (442244), we get a palindrome (4864684).

It can be divided in two parts, 442 and 2440, that added together give a palindrome (2882).

The spelling of 4422440 in words is "four million, four hundred twenty-two thousand, four hundred forty".