444133434421 has 2 divisors, whose sum is σ = 444133434422. Its totient is φ = 444133434420.

The previous prime is 444133434419. The next prime is 444133434467. The reversal of 444133434421 is 124434331444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222279246225 + 221854188196 = 471465^2 + 471014^2 .

It is a cyclic number.

It is not a de Polignac number, because 444133434421 - 2¹ = 444133434419 is a prime.

Together with 444133434419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444133434401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222066717210 + 222066717211.

It is an arithmetic number, because the mean of its divisors is an integer number (222066717211).

Almost surely, 2^444133434421 is an apocalyptic number.

It is an amenable number.

444133434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

444133434421 is an equidigital number, since it uses as much as digits as its factorization.

444133434421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 37.

Adding to 444133434421 its reverse (124434331444), we get a palindrome (568567765865).

The spelling of 444133434421 in words is "four hundred forty-four billion, one hundred thirty-three million, four hundred thirty-four thousand, four hundred twenty-one".