442774589 has 2 divisors, whose sum is σ = 442774590. Its totient is φ = 442774588.

The previous prime is 442774573. The next prime is 442774601. The reversal of 442774589 is 985477244.

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., 397683364 + 45091225 = 19942^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 442774589 - 2⁴ = 442774573 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442774559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221387294 + 221387295.

It is an arithmetic number, because the mean of its divisors is an integer number (221387295).

Almost surely, 2^442774589 is an apocalyptic number.

It is an amenable number.

442774589 is a deficient number, since it is larger than the sum of its proper divisors (1).

442774589 is an equidigital number, since it uses as much as digits as its factorization.

442774589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 50.

The square root of 442774589 is about 21042.2096986034. The cubic root of 442774589 is about 762.1858752312.

The spelling of 442774589 in words is "four hundred forty-two million, seven hundred seventy-four thousand, five hundred eighty-nine".