442008863 has 4 divisors (see below), whose sum is σ = 443320800. Its totient is φ = 440696928.

The previous prime is 442008841. The next prime is 442008869. The reversal of 442008863 is 368800244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442008863 - 2¹² = 442004767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442008869) 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, 655463 + ... + 656136.

It is an arithmetic number, because the mean of its divisors is an integer number (110830200).

Almost surely, 2^442008863 is an apocalyptic number.

442008863 is a deficient number, since it is larger than the sum of its proper divisors (1311937).

442008863 is a wasteful number, since it uses less digits than its factorization.

442008863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311936.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 442008863 is about 21024.0068255316. The cubic root of 442008863 is about 761.7462517624.

The spelling of 442008863 in words is "four hundred forty-two million, eight thousand, eight hundred sixty-three".