4440440020 has 12 divisors (see below), whose sum is σ = 9324924084. Its totient is φ = 1776176000.

The previous prime is 4440440003. The next prime is 4440440023. The reversal of 4440440020 is 200440444.

It can be written as a sum of positive squares in 2 ways, for example, as 997801744 + 3442638276 = 31588^2 + 58674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4440439973 and 4440440000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440440023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111010981 + ... + 111011020.

It is an arithmetic number, because the mean of its divisors is an integer number (777077007).

Almost surely, 2^4440440020 is an apocalyptic number.

It is an amenable number.

4440440020 is an abundant number, since it is smaller than the sum of its proper divisors (4884484064).

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

4440440020 is a wasteful number, since it uses less digits than its factorization.

4440440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222022010 (or 222022008 counting only the distinct ones).

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

The square root of 4440440020 is about 66636.6267153433. The cubic root of 4440440020 is about 1643.6474465167.

Adding to 4440440020 its reverse (200440444), we get a palindrome (4640880464).

The spelling of 4440440020 in words is "four billion, four hundred forty million, four hundred forty thousand, twenty".