442248211 has 2 divisors, whose sum is σ = 442248212. Its totient is φ = 442248210.

The previous prime is 442248203. The next prime is 442248221. The reversal of 442248211 is 112842244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442248211 - 2³ = 442248203 is a prime.

It is equal to p_23463730 and since 442248211 and 23463730 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442248211.

It is not a weakly prime, because it can be changed into another prime (442248221) 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, 221124105 + 221124106.

It is an arithmetic number, because the mean of its divisors is an integer number (221124106).

Almost surely, 2^442248211 is an apocalyptic number.

442248211 is a deficient number, since it is larger than the sum of its proper divisors (1).

442248211 is an equidigital number, since it uses as much as digits as its factorization.

442248211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4096, while the sum is 28.

The square root of 442248211 is about 21029.6983097714. The cubic root of 442248211 is about 761.8837222657.

The spelling of 442248211 in words is "four hundred forty-two million, two hundred forty-eight thousand, two hundred eleven".