442002444 has 96 divisors (see below), whose sum is σ = 1157419200. Its totient is φ = 130387968.

The previous prime is 442002439. The next prime is 442002497. The reversal of 442002444 is 444200244.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420832 + ... + 421880.

It is an arithmetic number, because the mean of its divisors is an integer number (12056450).

Almost surely, 2^442002444 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 442002444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578709600).

442002444 is an abundant number, since it is smaller than the sum of its proper divisors (715416756).

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

442002444 is a wasteful number, since it uses less digits than its factorization.

442002444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 442002444 is about 21023.8541661609. The cubic root of 442002444 is about 761.7425643003.

Adding to 442002444 its reverse (444200244), we get a palindrome (886202688).

The spelling of 442002444 in words is "four hundred forty-two million, two thousand, four hundred forty-four".