444161443 has 4 divisors (see below), whose sum is σ = 484539768. Its totient is φ = 403783120.

The previous prime is 444161437. The next prime is 444161453. The reversal of 444161443 is 344161444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 444161443 - 2²¹ = 442064291 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444161453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20189146 + ... + 20189167.

It is an arithmetic number, because the mean of its divisors is an integer number (121134942).

Almost surely, 2^444161443 is an apocalyptic number.

444161443 is a deficient number, since it is larger than the sum of its proper divisors (40378325).

444161443 is a wasteful number, since it uses less digits than its factorization.

444161443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40378324.

The product of its digits is 18432, while the sum is 31.

The square root of 444161443 is about 21075.1380303902. The cubic root of 444161443 is about 762.9808160847.

Subtracting from 444161443 its reverse (344161444), we obtain a palindrome (99999999).

The spelling of 444161443 in words is "four hundred forty-four million, one hundred sixty-one thousand, four hundred forty-three".