44044021 has 8 divisors (see below), whose sum is σ = 50393024. Its totient is φ = 37709280.

The previous prime is 44044019. The next prime is 44044051. The reversal of 44044021 is 12044044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44044021 - 2¹ = 44044019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44044021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44044051) 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, 4186 + ... + 10276.

It is an arithmetic number, because the mean of its divisors is an integer number (6299128).

Almost surely, 2^44044021 is an apocalyptic number.

It is an amenable number.

44044021 is a deficient number, since it is larger than the sum of its proper divisors (6349003).

44044021 is a wasteful number, since it uses less digits than its factorization.

44044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 44044021 is about 6636.5669589028. The cubic root of 44044021 is about 353.1525287333.

Adding to 44044021 its reverse (12044044), we get a palindrome (56088065).

The spelling of 44044021 in words is "forty-four million, forty-four thousand, twenty-one".