442298189 has 2 divisors, whose sum is σ = 442298190. Its totient is φ = 442298188.

The previous prime is 442298149. The next prime is 442298203. The reversal of 442298189 is 981892244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411684100 + 30614089 = 20290^2 + 5533^2 .

It is a cyclic number.

It is not a de Polignac number, because 442298189 - 2¹⁶ = 442232653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442298149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221149094 + 221149095.

It is an arithmetic number, because the mean of its divisors is an integer number (221149095).

Almost surely, 2^442298189 is an apocalyptic number.

It is an amenable number.

442298189 is a deficient number, since it is larger than the sum of its proper divisors (1).

442298189 is an equidigital number, since it uses as much as digits as its factorization.

442298189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 47.

The square root of 442298189 is about 21030.8865481225. The cubic root of 442298189 is about 761.9124210744.

The spelling of 442298189 in words is "four hundred forty-two million, two hundred ninety-eight thousand, one hundred eighty-nine".