442889806443 has 16 divisors (see below), whose sum is σ = 704222301696. Its totient is φ = 242076415680.

The previous prime is 442889806361. The next prime is 442889806493. The reversal of 442889806443 is 344608988244.

It is a happy number.

It is not a de Polignac number, because 442889806443 - 2⁸ = 442889806187 is a prime.

It is a super-2 number, since 2×442889806443² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442889806493) 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 in 15 ways as a sum of consecutive naturals, for example, 458477578 + ... + 458478543.

It is an arithmetic number, because the mean of its divisors is an integer number (44013893856).

Almost surely, 2^442889806443 is an apocalyptic number.

442889806443 is a deficient number, since it is larger than the sum of its proper divisors (261332495253).

442889806443 is a wasteful number, since it uses less digits than its factorization.

442889806443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916956154.

The product of its (nonzero) digits is 42467328, while the sum is 60.

The spelling of 442889806443 in words is "four hundred forty-two billion, eight hundred eighty-nine million, eight hundred six thousand, four hundred forty-three".