442346689 has 2 divisors, whose sum is σ = 442346690. Its totient is φ = 442346688.

The previous prime is 442346669. The next prime is 442346699. The reversal of 442346689 is 986643244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391367089 + 50979600 = 19783^2 + 7140^2 .

It is a cyclic number.

It is not a de Polignac number, because 442346689 - 2¹³ = 442338497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442346669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221173344 + 221173345.

It is an arithmetic number, because the mean of its divisors is an integer number (221173345).

Almost surely, 2^442346689 is an apocalyptic number.

It is an amenable number.

442346689 is a deficient number, since it is larger than the sum of its proper divisors (1).

442346689 is an equidigital number, since it uses as much as digits as its factorization.

442346689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 46.

The square root of 442346689 is about 21032.0395825036. The cubic root of 442346689 is about 761.9402691060.

The spelling of 442346689 in words is "four hundred forty-two million, three hundred forty-six thousand, six hundred eighty-nine".