442774573 has 2 divisors, whose sum is σ = 442774574. Its totient is φ = 442774572.

The previous prime is 442774559. The next prime is 442774589. The reversal of 442774573 is 375477244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246270249 + 196504324 = 15693^2 + 14018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442774573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442774543) 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, 221387286 + 221387287.

It is an arithmetic number, because the mean of its divisors is an integer number (221387287).

Almost surely, 2^442774573 is an apocalyptic number.

It is an amenable number.

442774573 is a deficient number, since it is larger than the sum of its proper divisors (1).

442774573 is an equidigital number, since it uses as much as digits as its factorization.

442774573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 43.

The square root of 442774573 is about 21042.2093184152. The cubic root of 442774573 is about 762.1858660504.

The spelling of 442774573 in words is "four hundred forty-two million, seven hundred seventy-four thousand, five hundred seventy-three".