442859 has 4 divisors (see below), whose sum is σ = 458160. Its totient is φ = 427560.

The previous prime is 442843. The next prime is 442861. The reversal of 442859 is 958244.

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 442859 - 2⁴ = 442843 is a prime.

It is a super-2 number, since 2×442859² = 392248187762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442829) 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, 7607 + ... + 7664.

It is an arithmetic number, because the mean of its divisors is an integer number (114540).

2⁴⁴²⁸⁵⁹ is an apocalyptic number.

442859 is a deficient number, since it is larger than the sum of its proper divisors (15301).

442859 is a wasteful number, since it uses less digits than its factorization.

442859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15300.

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

The square root of 442859 is about 665.4765209983. The cubic root of 442859 is about 76.2234306785.

The spelling of 442859 in words is "four hundred forty-two thousand, eight hundred fifty-nine".