442298881 has 2 divisors, whose sum is σ = 442298882. Its totient is φ = 442298880.

The previous prime is 442298873. The next prime is 442298887. The reversal of 442298881 is 188892244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355511025 + 86787856 = 18855^2 + 9316^2 .

It is a cyclic number.

It is not a de Polignac number, because 442298881 - 2³ = 442298873 is a prime.

It is a super-2 number, since 2×442298881² = 391256600267704322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442298887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221149440 + 221149441.

It is an arithmetic number, because the mean of its divisors is an integer number (221149441).

Almost surely, 2^442298881 is an apocalyptic number.

It is an amenable number.

442298881 is a deficient number, since it is larger than the sum of its proper divisors (1).

442298881 is an equidigital number, since it uses as much as digits as its factorization.

442298881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 46.

The square root of 442298881 is about 21030.9030001091. The cubic root of 442298881 is about 761.9128184255.

The spelling of 442298881 in words is "four hundred forty-two million, two hundred ninety-eight thousand, eight hundred eighty-one".