442985761 has 2 divisors, whose sum is σ = 442985762. Its totient is φ = 442985760.

The previous prime is 442985749. The next prime is 442985789. The reversal of 442985761 is 167589244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436016161 + 6969600 = 20881^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 442985761 - 2⁵ = 442985729 is a prime.

It is not a weakly prime, because it can be changed into another prime (442985161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221492880 + 221492881.

It is an arithmetic number, because the mean of its divisors is an integer number (221492881).

Almost surely, 2^442985761 is an apocalyptic number.

It is an amenable number.

442985761 is a deficient number, since it is larger than the sum of its proper divisors (1).

442985761 is an equidigital number, since it uses as much as digits as its factorization.

442985761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 442985761 is about 21047.2269194780. The cubic root of 442985761 is about 762.3070254649.

The spelling of 442985761 in words is "four hundred forty-two million, nine hundred eighty-five thousand, seven hundred sixty-one".