442244305 has 4 divisors (see below), whose sum is σ = 530693172. Its totient is φ = 353795440.

The previous prime is 442244281. The next prime is 442244317. The reversal of 442244305 is 503442244.

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 104530176 + 337714129 = 10224^2 + 18377^2 .

It is not a de Polignac number, because 442244305 - 2¹⁷ = 442113233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44224426 + ... + 44224435.

It is an arithmetic number, because the mean of its divisors is an integer number (132673293).

Almost surely, 2^442244305 is an apocalyptic number.

It is an amenable number.

442244305 is a deficient number, since it is larger than the sum of its proper divisors (88448867).

442244305 is an equidigital number, since it uses as much as digits as its factorization.

442244305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88448866.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 442244305 is about 21029.6054409016. The cubic root of 442244305 is about 761.8814792368.

Adding to 442244305 its reverse (503442244), we get a palindrome (945686549).

The spelling of 442244305 in words is "four hundred forty-two million, two hundred forty-four thousand, three hundred five".