442143984 has 80 divisors (see below), whose sum is σ = 1206510080. Its totient is φ = 139138560.

The previous prime is 442143983. The next prime is 442143997. The reversal of 442143984 is 489341244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442143983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334044 + ... + 335364.

It is an arithmetic number, because the mean of its divisors is an integer number (15081376).

Almost surely, 2^442143984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442143984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603255040).

442143984 is an abundant number, since it is smaller than the sum of its proper divisors (764366096).

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

442143984 is a wasteful number, since it uses less digits than its factorization.

442143984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1712 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 442143984 is about 21027.2200730387. The cubic root of 442143984 is about 761.8238651599.

The spelling of 442143984 in words is "four hundred forty-two million, one hundred forty-three thousand, nine hundred eighty-four".