442846 has 8 divisors (see below), whose sum is σ = 668520. Its totient is φ = 220008.

The previous prime is 442843. The next prime is 442861. The reversal of 442846 is 648244.

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

It is a super-2 number, since 2×442846² = 392225159432, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442843) 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, 261 + ... + 976.

It is an arithmetic number, because the mean of its divisors is an integer number (83565).

2⁴⁴²⁸⁴⁶ is an apocalyptic number.

442846 is a deficient number, since it is larger than the sum of its proper divisors (225674).

442846 is a wasteful number, since it uses less digits than its factorization.

442846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

The product of its digits is 6144, while the sum is 28.

The square root of 442846 is about 665.4667534896. The cubic root of 442846 is about 76.2226848322. Note that the first 3 decimals are identical.

The spelling of 442846 in words is "four hundred forty-two thousand, eight hundred forty-six".