442666775 has 24 divisors (see below), whose sum is σ = 557412240. Its totient is φ = 348687360.

The previous prime is 442666771. The next prime is 442666781. The reversal of 442666775 is 577666244.

It is not a de Polignac number, because 442666775 - 2² = 442666771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442666771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 671396 + ... + 672054.

It is an arithmetic number, because the mean of its divisors is an integer number (23225510).

Almost surely, 2^442666775 is an apocalyptic number.

442666775 is a deficient number, since it is larger than the sum of its proper divisors (114745465).

442666775 is a wasteful number, since it uses less digits than its factorization.

442666775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1038 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 47.

The square root of 442666775 is about 21039.6476919173. The cubic root of 442666775 is about 762.1240070477.

The spelling of 442666775 in words is "four hundred forty-two million, six hundred sixty-six thousand, seven hundred seventy-five".