443085221 has 4 divisors (see below), whose sum is σ = 450595200. Its totient is φ = 435575244.

The previous prime is 443085211. The next prime is 443085257. The reversal of 443085221 is 122580344.

It is a happy number.

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 443085221 - 2¹⁸ = 442823077 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 (443085211) 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, 3754901 + ... + 3755018.

It is an arithmetic number, because the mean of its divisors is an integer number (112648800).

Almost surely, 2^443085221 is an apocalyptic number.

It is an amenable number.

443085221 is a deficient number, since it is larger than the sum of its proper divisors (7509979).

443085221 is an equidigital number, since it uses as much as digits as its factorization.

443085221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7509978.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 443085221 is about 21049.5895684453. The cubic root of 443085221 is about 762.3640727335.

The spelling of 443085221 in words is "four hundred forty-three million, eighty-five thousand, two hundred twenty-one".