9876321 has 48 divisors (see below), whose sum is σ = 18170880. Its totient is φ = 5028480.

The previous prime is 9876301. The next prime is 9876331. The reversal of 9876321 is 1236789.

9876321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9876321 - 2⁵ = 9876289 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9876301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25195 + ... + 25583.

It is an arithmetic number, because the mean of its divisors is an integer number (378560).

Almost surely, 2^9876321 is an apocalyptic number.

9876321 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

9876321 is a deficient number, since it is larger than the sum of its proper divisors (8294559).

9876321 is a wasteful number, since it uses less digits than its factorization.

9876321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 443 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9876321 is about 3142.6614516998. The cubic root of 9876321 is about 214.5515875074.

The spelling of 9876321 in words is "nine million, eight hundred seventy-six thousand, three hundred twenty-one".