442044313 has 4 divisors (see below), whose sum is σ = 442086928. Its totient is φ = 442001700.

The previous prime is 442044301. The next prime is 442044347. The reversal of 442044313 is 313440244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 442044313 - 2⁹ = 442043801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442044373) 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, 5470 + ... + 30232.

It is an arithmetic number, because the mean of its divisors is an integer number (110521732).

Almost surely, 2^442044313 is an apocalyptic number.

It is an amenable number.

442044313 is a deficient number, since it is larger than the sum of its proper divisors (42615).

442044313 is a wasteful number, since it uses less digits than its factorization.

442044313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42614.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 442044313 is about 21024.8498924487. The cubic root of 442044313 is about 761.7666157453.

Adding to 442044313 its reverse (313440244), we get a palindrome (755484557).

The spelling of 442044313 in words is "four hundred forty-two million, forty-four thousand, three hundred thirteen".