442207585 has 4 divisors (see below), whose sum is σ = 530649108. Its totient is φ = 353766064.

The previous prime is 442207561. The next prime is 442207589. The reversal of 442207585 is 585702244.

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 206554384 + 235653201 = 14372^2 + 15351^2 .

It is a cyclic number.

It is not a de Polignac number, because 442207585 - 2¹⁷ = 442076513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442207589) 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, 44220754 + ... + 44220763.

It is an arithmetic number, because the mean of its divisors is an integer number (132662277).

Almost surely, 2^442207585 is an apocalyptic number.

It is an amenable number.

442207585 is a deficient number, since it is larger than the sum of its proper divisors (88441523).

442207585 is an equidigital number, since it uses as much as digits as its factorization.

442207585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88441522.

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 442207585 is about 21028.7323678818. The cubic root of 442207585 is about 761.8603920519.

The spelling of 442207585 in words is "four hundred forty-two million, two hundred seven thousand, five hundred eighty-five".