442488744 has 80 divisors (see below), whose sum is σ = 1243725120. Its totient is φ = 146979360.

The previous prime is 442488719. The next prime is 442488793. The reversal of 442488744 is 447884244.

It is a self number, because there is not a number n which added to its sum of digits gives 442488744.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 213457 + ... + 215519.

It is an arithmetic number, because the mean of its divisors is an integer number (15546564).

Almost surely, 2^442488744 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 442488744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621862560).

442488744 is an abundant number, since it is smaller than the sum of its proper divisors (801236376).

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

442488744 is a wasteful number, since it uses less digits than its factorization.

442488744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2399 counting only the distinct ones).

The product of its digits is 917504, while the sum is 45.

The square root of 442488744 is about 21035.4164208841. The cubic root of 442488744 is about 762.0218234186.

The spelling of 442488744 in words is "four hundred forty-two million, four hundred eighty-eight thousand, seven hundred forty-four".