442168847 has 2 divisors, whose sum is σ = 442168848. Its totient is φ = 442168846.

The previous prime is 442168819. The next prime is 442168873. The reversal of 442168847 is 748861244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442168847 - 2¹⁰ = 442167823 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442168798 and 442168807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442164847) 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, 221084423 + 221084424.

It is an arithmetic number, because the mean of its divisors is an integer number (221084424).

Almost surely, 2^442168847 is an apocalyptic number.

442168847 is a deficient number, since it is larger than the sum of its proper divisors (1).

442168847 is an equidigital number, since it uses as much as digits as its factorization.

442168847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 344064, while the sum is 44.

The square root of 442168847 is about 21027.8112745954. The cubic root of 442168847 is about 761.8381447253.

The spelling of 442168847 in words is "four hundred forty-two million, one hundred sixty-eight thousand, eight hundred forty-seven".