44143021 has 8 divisors (see below), whose sum is σ = 48074040. Its totient is φ = 40288512.

The previous prime is 44143013. The next prime is 44143031. The reversal of 44143021 is 12034144.

It can be written as a sum of positive squares in 4 ways, for example, as 978121 + 43164900 = 989^2 + 6570^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 44143021 - 2³ = 44143013 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 44143021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44143031) 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, 17920 + ... + 20233.

It is an arithmetic number, because the mean of its divisors is an integer number (6009255).

Almost surely, 2^44143021 is an apocalyptic number.

It is an amenable number.

44143021 is a deficient number, since it is larger than the sum of its proper divisors (3931019).

44143021 is a wasteful number, since it uses less digits than its factorization.

44143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38255.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 44143021 is about 6644.0214478883. The cubic root of 44143021 is about 353.4169303997.

Adding to 44143021 its reverse (12034144), we get a palindrome (56177165).

The spelling of 44143021 in words is "forty-four million, one hundred forty-three thousand, twenty-one".