442441223 has 4 divisors (see below), whose sum is σ = 505647120. Its totient is φ = 379235328.

The previous prime is 442441213. The next prime is 442441231. The reversal of 442441223 is 322144244.

It is a happy number.

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 442441223 - 2⁸ = 442440967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442441192 and 442441201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442441213) 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, 31602938 + ... + 31602951.

It is an arithmetic number, because the mean of its divisors is an integer number (126411780).

Almost surely, 2^442441223 is an apocalyptic number.

442441223 is a deficient number, since it is larger than the sum of its proper divisors (63205897).

442441223 is an equidigital number, since it uses as much as digits as its factorization.

442441223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63205896.

The product of its digits is 6144, while the sum is 26.

The square root of 442441223 is about 21034.2868431521. The cubic root of 442441223 is about 761.9945433759.

Adding to 442441223 its reverse (322144244), we get a palindrome (764585467).

The spelling of 442441223 in words is "four hundred forty-two million, four hundred forty-one thousand, two hundred twenty-three".