9804321 has 16 divisors (see below), whose sum is σ = 14707520. Its totient is φ = 6534756.

The previous prime is 9804317. The next prime is 9804331. The reversal of 9804321 is 1234089.

It is not a de Polignac number, because 9804321 - 2² = 9804317 is a prime.

It is a super-2 number, since 2×9804321² = 192249420542082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9804331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55 + ... + 4428.

It is an arithmetic number, because the mean of its divisors is an integer number (919220).

Almost surely, 2^9804321 is an apocalyptic number.

It is an amenable number.

9804321 is a deficient number, since it is larger than the sum of its proper divisors (4903199).

9804321 is an frugal number, since it uses more digits than its factorization.

9804321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504 (or 4486 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 9804321 is about 3131.1852388513. The cubic root of 9804321 is about 214.0289433005.

The spelling of 9804321 in words is "nine million, eight hundred four thousand, three hundred twenty-one".