8444321 has 4 divisors (see below), whose sum is σ = 8453700. Its totient is φ = 8434944.

The previous prime is 8444309. The next prime is 8444323. The reversal of 8444321 is 1234448.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 4080400 = 2089^2 + 2020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8444321 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (8444323) 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, 3176 + ... + 5193.

It is an arithmetic number, because the mean of its divisors is an integer number (2113425).

Almost surely, 2^8444321 is an apocalyptic number.

It is an amenable number.

8444321 is a deficient number, since it is larger than the sum of its proper divisors (9379).

8444321 is a wasteful number, since it uses less digits than its factorization.

8444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378.

The product of its digits is 3072, while the sum is 26.

The square root of 8444321 is about 2905.9113888761. The cubic root of 8444321 is about 203.6361658536.

Adding to 8444321 its reverse (1234448), we get a palindrome (9678769).

The spelling of 8444321 in words is "eight million, four hundred forty-four thousand, three hundred twenty-one".