442646866 has 16 divisors (see below), whose sum is σ = 675724608. Its totient is φ = 217414800.

The previous prime is 442646839. The next prime is 442646879. The reversal of 442646866 is 668646244.

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 7 ways as a sum of consecutive naturals, for example, 118081 + ... + 121771.

It is an arithmetic number, because the mean of its divisors is an integer number (42232788).

Almost surely, 2^442646866 is an apocalyptic number.

442646866 is a deficient number, since it is larger than the sum of its proper divisors (233077742).

442646866 is a wasteful number, since it uses less digits than its factorization.

442646866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737.

The product of its digits is 1327104, while the sum is 46.

The square root of 442646866 is about 21039.1745560514. The cubic root of 442646866 is about 762.1125813318.

The spelling of 442646866 in words is "four hundred forty-two million, six hundred forty-six thousand, eight hundred sixty-six".