442988 has 24 divisors (see below), whose sum is σ = 954912. Its totient is φ = 175104.

The previous prime is 442987. The next prime is 442991. The reversal of 442988 is 889244.

It is an Ulam number.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442988.

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 7 ways as a sum of consecutive naturals, for example, 245 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (39788).

2⁴⁴²⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

442988 is an abundant number, since it is smaller than the sum of its proper divisors (511924).

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

442988 is a wasteful number, since it uses less digits than its factorization.

442988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1239 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 442988 is about 665.5734369700. The cubic root of 442988 is about 76.2308309782.

The spelling of 442988 in words is "four hundred forty-two thousand, nine hundred eighty-eight".