442983 has 4 divisors (see below), whose sum is σ = 590648. Its totient is φ = 295320.

The previous prime is 442979. The next prime is 442987. The reversal of 442983 is 389244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (442979) and next prime (442987).

It is not a de Polignac number, because 442983 - 2² = 442979 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442983.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 73828 + ... + 73833.

It is an arithmetic number, because the mean of its divisors is an integer number (147662).

2⁴⁴²⁹⁸³ is an apocalyptic number.

442983 is a deficient number, since it is larger than the sum of its proper divisors (147665).

442983 is a wasteful number, since it uses less digits than its factorization.

442983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147664.

The product of its digits is 6912, while the sum is 30.

The square root of 442983 is about 665.5696807998. The cubic root of 442983 is about 76.2305441716.

The spelling of 442983 in words is "four hundred forty-two thousand, nine hundred eighty-three".