442666004 has 48 divisors (see below), whose sum is σ = 890144640. Its totient is φ = 190650240.

The previous prime is 442665997. The next prime is 442666057. The reversal of 442666004 is 400666244.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 108302 + ... + 112314.

It is an arithmetic number, because the mean of its divisors is an integer number (18544680).

Almost surely, 2^442666004 is an apocalyptic number.

442666004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442666004 is an abundant number, since it is smaller than the sum of its proper divisors (447478636).

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

442666004 is a wasteful number, since it uses less digits than its factorization.

442666004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160 (or 4158 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 442666004 is about 21039.6293693591. The cubic root of 442666004 is about 762.1235645794.

The spelling of 442666004 in words is "four hundred forty-two million, six hundred sixty-six thousand, four".