4441344021 has 8 divisors (see below), whose sum is σ = 6579768960. Its totient is φ = 2960895996.

The previous prime is 4441344013. The next prime is 4441344023. The reversal of 4441344021 is 1204431444.

It is not a de Polignac number, because 4441344021 - 2³ = 4441344013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 164494223 = 4441344021 / (4 + 4 + 4 + 1 + 3 + 4 + 4 + 0 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441344023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82247085 + ... + 82247138.

It is an arithmetic number, because the mean of its divisors is an integer number (822471120).

Almost surely, 2^4441344021 is an apocalyptic number.

It is an amenable number.

4441344021 is a deficient number, since it is larger than the sum of its proper divisors (2138424939).

4441344021 is a wasteful number, since it uses less digits than its factorization.

4441344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164494232 (or 164494226 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 4441344021 is about 66643.4094340918. The cubic root of 4441344021 is about 1643.7589788654.

Adding to 4441344021 its reverse (1204431444), we get a palindrome (5645775465).

The spelling of 4441344021 in words is "four billion, four hundred forty-one million, three hundred forty-four thousand, twenty-one".