442883381 has 2 divisors, whose sum is σ = 442883382. Its totient is φ = 442883380.

The previous prime is 442883347. The next prime is 442883429. The reversal of 442883381 is 183388244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351375025 + 91508356 = 18745^2 + 9566^2 .

It is a cyclic number.

It is not a de Polignac number, because 442883381 - 2¹⁰ = 442882357 is a prime.

It is a super-2 number, since 2×442883381² = 392291378331982322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442883281) 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, 221441690 + 221441691.

It is an arithmetic number, because the mean of its divisors is an integer number (221441691).

Almost surely, 2^442883381 is an apocalyptic number.

It is an amenable number.

442883381 is a deficient number, since it is larger than the sum of its proper divisors (1).

442883381 is an equidigital number, since it uses as much as digits as its factorization.

442883381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 41.

The square root of 442883381 is about 21044.7946295515. The cubic root of 442883381 is about 762.2482944526.

The spelling of 442883381 in words is "four hundred forty-two million, eight hundred eighty-three thousand, three hundred eighty-one".