4421020440 has 128 divisors (see below), whose sum is σ = 14101309440. Its totient is φ = 1106366976.

The previous prime is 4421020427. The next prime is 4421020477. The reversal of 4421020440 is 440201244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131169 + ... + 161391.

It is an arithmetic number, because the mean of its divisors is an integer number (110166480).

Almost surely, 2^4421020440 is an apocalyptic number.

4421020440 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 4421020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7050654720).

4421020440 is an abundant number, since it is smaller than the sum of its proper divisors (9680289000).

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

4421020440 is a wasteful number, since it uses less digits than its factorization.

4421020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30313 (or 30309 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 4421020440 is about 66490.7545452749. The cubic root of 4421020440 is about 1641.2478654557.

Adding to 4421020440 its reverse (440201244), we get a palindrome (4861221684).

The spelling of 4421020440 in words is "four billion, four hundred twenty-one million, twenty thousand, four hundred forty".