44240321 has 4 divisors (see below), whose sum is σ = 44317572. Its totient is φ = 44163072.

The previous prime is 44240309. The next prime is 44240347. The reversal of 44240321 is 12304244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25361296 + 18879025 = 5036^2 + 4345^2 .

It is a cyclic number.

It is not a de Polignac number, because 44240321 - 2¹⁴ = 44223937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 44240293 and 44240302.

It is not an unprimeable number, because it can be changed into a prime (44240381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37760 + ... + 38913.

It is an arithmetic number, because the mean of its divisors is an integer number (11079393).

Almost surely, 2^44240321 is an apocalyptic number.

It is an amenable number.

44240321 is a deficient number, since it is larger than the sum of its proper divisors (77251).

44240321 is an equidigital number, since it uses as much as digits as its factorization.

44240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77250.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44240321 is about 6651.3397898469. The cubic root of 44240321 is about 353.6764069212.

Adding to 44240321 its reverse (12304244), we get a palindrome (56544565).

The spelling of 44240321 in words is "forty-four million, two hundred forty thousand, three hundred twenty-one".