442402223 has 4 divisors (see below), whose sum is σ = 444499128. Its totient is φ = 440305320.

The previous prime is 442402199. The next prime is 442402241. The reversal of 442402223 is 322204244.

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 442402223 - 2¹⁰ = 442401199 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 (442402243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048136 + ... + 1048557.

It is an arithmetic number, because the mean of its divisors is an integer number (111124782).

Almost surely, 2^442402223 is an apocalyptic number.

442402223 is a deficient number, since it is larger than the sum of its proper divisors (2096905).

442402223 is a wasteful number, since it uses less digits than its factorization.

442402223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096904.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 442402223 is about 21033.3597649068. The cubic root of 442402223 is about 761.9721534637.

Adding to 442402223 its reverse (322204244), we get a palindrome (764606467).

The spelling of 442402223 in words is "four hundred forty-two million, four hundred two thousand, two hundred twenty-three".