442997 has 2 divisors, whose sum is σ = 442998. Its totient is φ = 442996.

The previous prime is 442991. The next prime is 443011. The reversal of 442997 is 799244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361201 + 81796 = 601^2 + 286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221498 + 221499.

It is an arithmetic number, because the mean of its divisors is an integer number (221499).

2⁴⁴²⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

442997 is a deficient number, since it is larger than the sum of its proper divisors (1).

442997 is an equidigital number, since it uses as much as digits as its factorization.

442997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 442997 is about 665.5801980227. The cubic root of 442997 is about 76.2313472246.

The spelling of 442997 in words is "four hundred forty-two thousand, nine hundred ninety-seven".