442849471 has 2 divisors, whose sum is σ = 442849472. Its totient is φ = 442849470.

The previous prime is 442849469. The next prime is 442849481. The reversal of 442849471 is 174948244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442849471 - 2¹ = 442849469 is a prime.

It is a super-3 number, since 3×442849471³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 442849469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442849481) 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 as a sum of consecutive naturals, namely, 221424735 + 221424736.

It is an arithmetic number, because the mean of its divisors is an integer number (221424736).

Almost surely, 2^442849471 is an apocalyptic number.

442849471 is a deficient number, since it is larger than the sum of its proper divisors (1).

442849471 is an equidigital number, since it uses as much as digits as its factorization.

442849471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The square root of 442849471 is about 21043.9889517173. The cubic root of 442849471 is about 762.2288397455.

The spelling of 442849471 in words is "four hundred forty-two million, eight hundred forty-nine thousand, four hundred seventy-one".