442961 has 2 divisors, whose sum is σ = 442962. Its totient is φ = 442960.

The previous prime is 442919. The next prime is 442963. The reversal of 442961 is 169244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231361 + 211600 = 481^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 442961 - 2¹⁰ = 441937 is a prime.

It is a Sophie Germain prime.

Together with 442963, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 442961.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442961.

It is not a weakly prime, because it can be changed into another prime (442963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221480 + 221481.

It is an arithmetic number, because the mean of its divisors is an integer number (221481).

2⁴⁴²⁹⁶¹ is an apocalyptic number.

It is an amenable number.

442961 is a deficient number, since it is larger than the sum of its proper divisors (1).

442961 is an equidigital number, since it uses as much as digits as its factorization.

442961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 442961 is about 665.5531533995. The cubic root of 442961 is about 76.2292821972.

The spelling of 442961 in words is "four hundred forty-two thousand, nine hundred sixty-one".