444025221 has 4 divisors (see below), whose sum is σ = 592033632. Its totient is φ = 296016812.

The previous prime is 444025207. The next prime is 444025229. The reversal of 444025221 is 122520444.

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 444025221 - 2⁹ = 444024709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444025191 and 444025200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444025229) 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, 74004201 + ... + 74004206.

It is an arithmetic number, because the mean of its divisors is an integer number (148008408).

Almost surely, 2^444025221 is an apocalyptic number.

It is an amenable number.

444025221 is a deficient number, since it is larger than the sum of its proper divisors (148008411).

444025221 is a wasteful number, since it uses less digits than its factorization.

444025221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148008410.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 444025221 is about 21071.9059650521. The cubic root of 444025221 is about 762.9028073624.

Adding to 444025221 its reverse (122520444), we get a palindrome (566545665).

The spelling of 444025221 in words is "four hundred forty-four million, twenty-five thousand, two hundred twenty-one".