442984 has 8 divisors (see below), whose sum is σ = 830610. Its totient is φ = 221488.

The previous prime is 442979. The next prime is 442987. The reversal of 442984 is 489244.

It can be written as a sum of positive squares in only one way, i.e., 334084 + 108900 = 578^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

442984 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 as a sum of consecutive naturals, namely, 27679 + ... + 27694.

2⁴⁴²⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

442984 is a deficient number, since it is larger than the sum of its proper divisors (387626).

442984 is a wasteful number, since it uses less digits than its factorization.

442984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55379 (or 55375 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 442984 is about 665.5704320356. The cubic root of 442984 is about 76.2306015331.

The spelling of 442984 in words is "four hundred forty-two thousand, nine hundred eighty-four".