442163223 has 6 divisors (see below), whose sum is σ = 638680224. Its totient is φ = 294775476.

The previous prime is 442163219. The next prime is 442163233. The reversal of 442163223 is 322361244.

442163223 is a `hidden beast` number, since 4 + 4 + 2 + 1 + 632 + 23 = 666.

It is not a de Polignac number, because 442163223 - 2² = 442163219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442163213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24564615 + ... + 24564632.

It is an arithmetic number, because the mean of its divisors is an integer number (106446704).

Almost surely, 2^442163223 is an apocalyptic number.

442163223 is a deficient number, since it is larger than the sum of its proper divisors (196517001).

442163223 is a wasteful number, since it uses less digits than its factorization.

442163223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49129253 (or 49129250 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 442163223 is about 21027.6775465100. The cubic root of 442163223 is about 761.8349147405.

The spelling of 442163223 in words is "four hundred forty-two million, one hundred sixty-three thousand, two hundred twenty-three".