442440223 has 8 divisors (see below), whose sum is σ = 445005392. Its totient is φ = 439883136.

The previous prime is 442440221. The next prime is 442440241. The reversal of 442440223 is 322044244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442440223 - 2¹ = 442440221 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 (442440221) 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 7 ways as a sum of consecutive naturals, for example, 132136 + ... + 135442.

It is an arithmetic number, because the mean of its divisors is an integer number (55625674).

Almost surely, 2^442440223 is an apocalyptic number.

442440223 is a deficient number, since it is larger than the sum of its proper divisors (2565169).

442440223 is a wasteful number, since it uses less digits than its factorization.

442440223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 442440223 is about 21034.2630724254. The cubic root of 442440223 is about 761.9939692921.

Adding to 442440223 its reverse (322044244), we get a palindrome (764484467).

The spelling of 442440223 in words is "four hundred forty-two million, four hundred forty thousand, two hundred twenty-three".