9876543321 has 16 divisors (see below), whose sum is σ = 13790206080. Its totient is φ = 6275660160.

The previous prime is 9876543319. The next prime is 9876543323. The reversal of 9876543321 is 1233456789.

It is an interprime number because it is at equal distance from previous prime (9876543319) and next prime (9876543323).

It is not a de Polignac number, because 9876543321 - 2¹ = 9876543319 is a prime.

It is a super-2 number, since 2×9876543321² (a number of 21 digits) contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9876543323) 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, 235306 + ... + 274083.

It is an arithmetic number, because the mean of its divisors is an integer number (861887880).

Almost surely, 2^9876543321 is an apocalyptic number.

It is an amenable number.

9876543321 is a deficient number, since it is larger than the sum of its proper divisors (3913662759).

9876543321 is a wasteful number, since it uses less digits than its factorization.

9876543321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509696.

The product of its digits is 1088640, while the sum is 48.

The square root of 9876543321 is about 99380.7995590698. The cubic root of 9876543321 is about 2145.5319738369.

The spelling of 9876543321 in words is "nine billion, eight hundred seventy-six million, five hundred forty-three thousand, three hundred twenty-one".