442204193 has 2 divisors, whose sum is σ = 442204194. Its totient is φ = 442204192.

The previous prime is 442204129. The next prime is 442204201. The reversal of 442204193 is 391402244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426339904 + 15864289 = 20648^2 + 3983^2 .

It is a cyclic number.

It is not a de Polignac number, because 442204193 - 2⁶ = 442204129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (442200193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221102096 + 221102097.

It is an arithmetic number, because the mean of its divisors is an integer number (221102097).

Almost surely, 2^442204193 is an apocalyptic number.

It is an amenable number.

442204193 is a deficient number, since it is larger than the sum of its proper divisors (1).

442204193 is an equidigital number, since it uses as much as digits as its factorization.

442204193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 442204193 is about 21028.6517161705. The cubic root of 442204193 is about 761.8584440700.

The spelling of 442204193 in words is "four hundred forty-two million, two hundred four thousand, one hundred ninety-three".