442985 has 8 divisors (see below), whose sum is σ = 559680. Its totient is φ = 335664.

The previous prime is 442979. The next prime is 442987. The reversal of 442985 is 589244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442985 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2237 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (69960).

2⁴⁴²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

442985 is a deficient number, since it is larger than the sum of its proper divisors (116695).

442985 is a wasteful number, since it uses less digits than its factorization.

442985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687.

The product of its digits is 11520, while the sum is 32.

The square root of 442985 is about 665.5711832704. The cubic root of 442985 is about 76.2306588945.

The spelling of 442985 in words is "four hundred forty-two thousand, nine hundred eighty-five".