4421002144 has 72 divisors (see below), whose sum is σ = 9479604960. Its totient is φ = 2028619008.

The previous prime is 4421002141. The next prime is 4421002147. The reversal of 4421002144 is 4412001244.

It is an interprime number because it is at equal distance from previous prime (4421002141) and next prime (4421002147).

It is not an unprimeable number, because it can be changed into a prime (4421002141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 965749 + ... + 970315.

It is an arithmetic number, because the mean of its divisors is an integer number (131661180).

Almost surely, 2^4421002144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4421002144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4739802480).

4421002144 is an abundant number, since it is smaller than the sum of its proper divisors (5058602816).

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

4421002144 is a wasteful number, since it uses less digits than its factorization.

4421002144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782 (or 4761 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 4421002144 is about 66490.6169620947. The cubic root of 4421002144 is about 1641.2456013998.

Adding to 4421002144 its reverse (4412001244), we get a palindrome (8833003388).

The spelling of 4421002144 in words is "four billion, four hundred twenty-one million, two thousand, one hundred forty-four".