444422143 has 16 divisors (see below), whose sum is σ = 516775680. Its totient is φ = 377712000.

The previous prime is 444422137. The next prime is 444422159. The reversal of 444422143 is 341224444.

It is a cyclic number.

It is not a de Polignac number, because 444422143 - 2⁹ = 444421631 is a prime.

It is a super-3 number, since 3×444422143³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444422183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20368 + ... + 36106.

It is an arithmetic number, because the mean of its divisors is an integer number (32298480).

Almost surely, 2^444422143 is an apocalyptic number.

444422143 is a deficient number, since it is larger than the sum of its proper divisors (72353537).

444422143 is a wasteful number, since it uses less digits than its factorization.

444422143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15918.

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

The square root of 444422143 is about 21081.3221359572. The cubic root of 444422143 is about 763.1300637648.

Adding to 444422143 its reverse (341224444), we get a palindrome (785646587).

The spelling of 444422143 in words is "four hundred forty-four million, four hundred twenty-two thousand, one hundred forty-three".