444421423 has 2 divisors, whose sum is σ = 444421424. Its totient is φ = 444421422.

The previous prime is 444421421. The next prime is 444421441. The reversal of 444421423 is 324124444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444421423 - 2¹ = 444421421 is a prime.

It is a super-3 number, since 3×444421423³ (a number of 27 digits) contains 333 as substring.

Together with 444421421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 444421391 and 444421400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444421421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222210711 + 222210712.

It is an arithmetic number, because the mean of its divisors is an integer number (222210712).

Almost surely, 2^444421423 is an apocalyptic number.

444421423 is a deficient number, since it is larger than the sum of its proper divisors (1).

444421423 is an equidigital number, since it uses as much as digits as its factorization.

444421423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 28.

The square root of 444421423 is about 21081.3050592225. The cubic root of 444421423 is about 763.1296516537.

Adding to 444421423 its reverse (324124444), we get a palindrome (768545867).

The spelling of 444421423 in words is "four hundred forty-four million, four hundred twenty-one thousand, four hundred twenty-three".