442440168 has 16 divisors (see below), whose sum is σ = 1106100480. Its totient is φ = 147480048.

The previous prime is 442440161. The next prime is 442440169. The reversal of 442440168 is 861044244.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (442440161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9217480 + ... + 9217527.

It is an arithmetic number, because the mean of its divisors is an integer number (69131280).

Almost surely, 2^442440168 is an apocalyptic number.

It is an amenable number.

442440168 is an abundant number, since it is smaller than the sum of its proper divisors (663660312).

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

442440168 is a wasteful number, since it uses less digits than its factorization.

442440168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18435016 (or 18435012 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 442440168 is about 21034.2617650347. The cubic root of 442440168 is about 761.9939377174.

The spelling of 442440168 in words is "four hundred forty-two million, four hundred forty thousand, one hundred sixty-eight".