44340221 has 4 divisors (see below), whose sum is σ = 44500572. Its totient is φ = 44179872.

The previous prime is 44340209. The next prime is 44340227. The reversal of 44340221 is 12204344.

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 13980121 + 30360100 = 3739^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 44340221 - 2¹⁴ = 44323837 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 = 44340193 and 44340202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44340227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79760 + ... + 80313.

It is an arithmetic number, because the mean of its divisors is an integer number (11125143).

Almost surely, 2^44340221 is an apocalyptic number.

It is an amenable number.

44340221 is a deficient number, since it is larger than the sum of its proper divisors (160351).

44340221 is a wasteful number, since it uses less digits than its factorization.

44340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160350.

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

The square root of 44340221 is about 6658.8453203239. The cubic root of 44340221 is about 353.9424215034.

Adding to 44340221 its reverse (12204344), we get a palindrome (56544565).

The spelling of 44340221 in words is "forty-four million, three hundred forty thousand, two hundred twenty-one".