444211421 has 2 divisors, whose sum is σ = 444211422. Its totient is φ = 444211420.

The previous prime is 444211379. The next prime is 444211447. The reversal of 444211421 is 124112444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293265625 + 150945796 = 17125^2 + 12286^2 .

It is a cyclic number.

It is not a de Polignac number, because 444211421 - 2¹⁰ = 444210397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444211451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222105710 + 222105711.

It is an arithmetic number, because the mean of its divisors is an integer number (222105711).

Almost surely, 2^444211421 is an apocalyptic number.

It is an amenable number.

444211421 is a deficient number, since it is larger than the sum of its proper divisors (1).

444211421 is an equidigital number, since it uses as much as digits as its factorization.

444211421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 23.

The square root of 444211421 is about 21076.3237069466. The cubic root of 444211421 is about 763.0094324250.

Adding to 444211421 its reverse (124112444), we get a palindrome (568323865).

The spelling of 444211421 in words is "four hundred forty-four million, two hundred eleven thousand, four hundred twenty-one".