244443221 has 8 divisors (see below), whose sum is σ = 282351744. Its totient is φ = 209149120.

The previous prime is 244443197. The next prime is 244443229. The reversal of 244443221 is 122344442.

It is a happy number.

244443221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244443221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244443229) 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, 653405 + ... + 653778.

It is an arithmetic number, because the mean of its divisors is an integer number (35293968).

Almost surely, 2^244443221 is an apocalyptic number.

It is an amenable number.

244443221 is a deficient number, since it is larger than the sum of its proper divisors (37908523).

244443221 is a wasteful number, since it uses less digits than its factorization.

244443221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307211.

The product of its digits is 6144, while the sum is 26.

The square root of 244443221 is about 15634.6800734777. The cubic root of 244443221 is about 625.2581086465.

Adding to 244443221 its reverse (122344442), we get a palindrome (366787663).

The spelling of 244443221 in words is "two hundred forty-four million, four hundred forty-three thousand, two hundred twenty-one".