442442233 has 4 divisors (see below), whose sum is σ = 443066980. Its totient is φ = 441817488.

The previous prime is 442442213. The next prime is 442442249. The reversal of 442442233 is 332244244.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 259435449 + 183006784 = 16107^2 + 13528^2 .

It is a cyclic number.

It is not a de Polignac number, because 442442233 - 2⁵ = 442442201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442442213) 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, 311310 + ... + 312727.

It is an arithmetic number, because the mean of its divisors is an integer number (110766745).

Almost surely, 2^442442233 is an apocalyptic number.

It is an amenable number.

442442233 is a deficient number, since it is larger than the sum of its proper divisors (624747).

442442233 is an equidigital number, since it uses as much as digits as its factorization.

442442233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624746.

The product of its digits is 18432, while the sum is 28.

The square root of 442442233 is about 21034.3108515587. The cubic root of 442442233 is about 761.9951231998.

Adding to 442442233 its reverse (332244244), we get a palindrome (774686477).

The spelling of 442442233 in words is "four hundred forty-two million, four hundred forty-two thousand, two hundred thirty-three".