442664466 has 8 divisors (see below), whose sum is σ = 885328944. Its totient is φ = 147554820.

The previous prime is 442664461. The next prime is 442664473. The reversal of 442664466 is 664466244.

It is a sphenic number, since it is the product of 3 distinct primes.

442664466 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (442664461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36888700 + ... + 36888711.

It is an arithmetic number, because the mean of its divisors is an integer number (110666118).

Almost surely, 2^442664466 is an apocalyptic number.

442664466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

442664466 is a wasteful number, since it uses less digits than its factorization.

442664466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73777416.

The product of its digits is 663552, while the sum is 42.

The square root of 442664466 is about 21039.5928192539. The cubic root of 442664466 is about 762.1226819370.

The spelling of 442664466 in words is "four hundred forty-two million, six hundred sixty-four thousand, four hundred sixty-six".