4402440 has 96 divisors (see below), whose sum is σ = 16361280. Its totient is φ = 1005696.

The previous prime is 4402429. The next prime is 4402441. The reversal of 4402440 is 442044.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (4402441) 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, 1647 + ... + 3393.

It is an arithmetic number, because the mean of its divisors is an integer number (170430).

Almost surely, 2^4402440 is an apocalyptic number.

4402440 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 4402440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8180640).

4402440 is an abundant number, since it is smaller than the sum of its proper divisors (11958840).

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

4402440 is a wasteful number, since it uses less digits than its factorization.

4402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4402440 is about 2098.1992279095. The cubic root of 4402440 is about 163.8945385819.

Adding to 4402440 its reverse (442044), we get a palindrome (4844484).

The spelling of 4402440 in words is "four million, four hundred two thousand, four hundred forty".