442217 has 2 divisors, whose sum is σ = 442218. Its totient is φ = 442216.

The previous prime is 442207. The next prime is 442229. The reversal of 442217 is 712244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430336 + 11881 = 656^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 442217 - 2⁴ = 442201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442207) 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, 221108 + 221109.

It is an arithmetic number, because the mean of its divisors is an integer number (221109).

2⁴⁴²²¹⁷ is an apocalyptic number.

It is an amenable number.

442217 is a deficient number, since it is larger than the sum of its proper divisors (1).

442217 is an equidigital number, since it uses as much as digits as its factorization.

442217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 20.

The square root of 442217 is about 664.9939849352. The cubic root of 442217 is about 76.1865798913.

The spelling of 442217 in words is "four hundred forty-two thousand, two hundred seventeen", and thus it is an iban number.