442323443 has 4 divisors (see below), whose sum is σ = 442604448. Its totient is φ = 442042440.

The previous prime is 442323403. The next prime is 442323463. The reversal of 442323443 is 344323244.

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 442323443 - 2¹² = 442319347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442323403) 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, 138128 + ... + 141293.

It is an arithmetic number, because the mean of its divisors is an integer number (110651112).

Almost surely, 2^442323443 is an apocalyptic number.

442323443 is a deficient number, since it is larger than the sum of its proper divisors (281005).

442323443 is a wasteful number, since it uses less digits than its factorization.

442323443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281004.

The product of its digits is 27648, while the sum is 29.

The square root of 442323443 is about 21031.4869422017. The cubic root of 442323443 is about 761.9269218271.

Adding to 442323443 its reverse (344323244), we get a palindrome (786646687).

The spelling of 442323443 in words is "four hundred forty-two million, three hundred twenty-three thousand, four hundred forty-three".