444146213 has 4 divisors (see below), whose sum is σ = 507595680. Its totient is φ = 380696748.

The previous prime is 444146189. The next prime is 444146221. The reversal of 444146213 is 312641444.

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.

It is a cyclic number.

It is not a de Polignac number, because 444146213 - 2²⁰ = 443097637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444146713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31724723 + ... + 31724736.

It is an arithmetic number, because the mean of its divisors is an integer number (126898920).

Almost surely, 2^444146213 is an apocalyptic number.

It is an amenable number.

444146213 is a deficient number, since it is larger than the sum of its proper divisors (63449467).

444146213 is an equidigital number, since it uses as much as digits as its factorization.

444146213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63449466.

The product of its digits is 9216, while the sum is 29.

The square root of 444146213 is about 21074.7767010709. The cubic root of 444146213 is about 762.9720952837.

Adding to 444146213 its reverse (312641444), we get a palindrome (756787657).

The spelling of 444146213 in words is "four hundred forty-four million, one hundred forty-six thousand, two hundred thirteen".