84443321 has 4 divisors (see below), whose sum is σ = 84466944. Its totient is φ = 84419700.

The previous prime is 84443311. The next prime is 84443347. The reversal of 84443321 is 12334448.

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 a de Polignac number, because none of the positive numbers 2^k-84443321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (84443311) 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, 5225 + ... + 14006.

It is an arithmetic number, because the mean of its divisors is an integer number (21116736).

Almost surely, 2^84443321 is an apocalyptic number.

It is an amenable number.

84443321 is a deficient number, since it is larger than the sum of its proper divisors (23623).

84443321 is a wasteful number, since it uses less digits than its factorization.

84443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23622.

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

The square root of 84443321 is about 9189.3047071038. The cubic root of 84443321 is about 438.7210120918.

Adding to 84443321 its reverse (12334448), we get a palindrome (96777769).

The spelling of 84443321 in words is "eighty-four million, four hundred forty-three thousand, three hundred twenty-one".