442999 has 4 divisors (see below), whose sum is σ = 447664. Its totient is φ = 438336.

The previous prime is 442997. The next prime is 443011. The reversal of 442999 is 999244.

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

It is a cyclic number.

It is not a de Polignac number, because 442999 - 2¹ = 442997 is a prime.

It is a super-2 number, since 2×442999² = 392496228002, which contains 22 as substring.

It is a Duffinian number.

442999 is a modest number, since divided by 999 gives 442 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187 + ... + 2380.

It is an arithmetic number, because the mean of its divisors is an integer number (111916).

2⁴⁴²⁹⁹⁹ is an apocalyptic number.

442999 is a deficient number, since it is larger than the sum of its proper divisors (4665).

442999 is an equidigital number, since it uses as much as digits as its factorization.

442999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664.

The product of its digits is 23328, while the sum is 37.

The square root of 442999 is about 665.5817004696. The cubic root of 442999 is about 76.2314619450.

It can be divided in two parts, 442 and 999, that added together give a palindrome (1441).

The spelling of 442999 in words is "four hundred forty-two thousand, nine hundred ninety-nine".