244420321 has 2 divisors, whose sum is σ = 244420322. Its totient is φ = 244420320.

The previous prime is 244420289. The next prime is 244420331. The reversal of 244420321 is 123024442.

It is a happy number.

244420321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124211025 + 120209296 = 11145^2 + 10964^2 .

It is a cyclic number.

It is not a de Polignac number, because 244420321 - 2⁵ = 244420289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244420292 and 244420301.

It is not a weakly prime, because it can be changed into another prime (244420331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122210160 + 122210161.

It is an arithmetic number, because the mean of its divisors is an integer number (122210161).

Almost surely, 2^244420321 is an apocalyptic number.

It is an amenable number.

244420321 is a deficient number, since it is larger than the sum of its proper divisors (1).

244420321 is an equidigital number, since it uses as much as digits as its factorization.

244420321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 244420321 is about 15633.9477100315. The cubic root of 244420321 is about 625.2385828336.

Adding to 244420321 its reverse (123024442), we get a palindrome (367444763).

The spelling of 244420321 in words is "two hundred forty-four million, four hundred twenty thousand, three hundred twenty-one".