442986 has 32 divisors (see below), whose sum is σ = 969408. Its totient is φ = 134400.

The previous prime is 442979. The next prime is 442987. The reversal of 442986 is 689244.

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

442986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4336 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (30294).

2⁴⁴²⁹⁸⁶ is an apocalyptic number.

442986 is an abundant number, since it is smaller than the sum of its proper divisors (526422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442986 is a wasteful number, since it uses less digits than its factorization.

442986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its digits is 13824, while the sum is 33.

The square root of 442986 is about 665.5719345045. The cubic root of 442986 is about 76.2307162558.

The spelling of 442986 in words is "four hundred forty-two thousand, nine hundred eighty-six".