444311021 has 8 divisors (see below), whose sum is σ = 553946304. Its totient is φ = 346216320.

The previous prime is 444311011. The next prime is 444311027. The reversal of 444311021 is 120113444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444311021 - 2⁶ = 444310957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444310984 and 444311002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444311027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2885060 + ... + 2885213.

It is an arithmetic number, because the mean of its divisors is an integer number (69243288).

Almost surely, 2^444311021 is an apocalyptic number.

It is an amenable number.

444311021 is a deficient number, since it is larger than the sum of its proper divisors (109635283).

444311021 is a wasteful number, since it uses less digits than its factorization.

444311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770291.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 444311021 is about 21078.6864154292. The cubic root of 444311021 is about 763.0664548673.

Adding to 444311021 its reverse (120113444), we get a palindrome (564424465).

The spelling of 444311021 in words is "four hundred forty-four million, three hundred eleven thousand, twenty-one".