9872329 has 2 divisors, whose sum is σ = 9872330. Its totient is φ = 9872328.

The previous prime is 9872323. The next prime is 9872339. The reversal of 9872329 is 9232789.

9872329 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7033104 + 2839225 = 2652^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 9872329 - 2³ = 9872321 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 9872291 and 9872300.

It is not a weakly prime, because it can be changed into another prime (9872321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4936164 + 4936165.

It is an arithmetic number, because the mean of its divisors is an integer number (4936165).

Almost surely, 2^9872329 is an apocalyptic number.

It is an amenable number.

9872329 is a deficient number, since it is larger than the sum of its proper divisors (1).

9872329 is an equidigital number, since it uses as much as digits as its factorization.

9872329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 9872329 is about 3142.0262570513. The cubic root of 9872329 is about 214.5226764260.

It can be divided in two parts, 9872 and 329, that added together give a palindrome (10201).

The spelling of 9872329 in words is "nine million, eight hundred seventy-two thousand, three hundred twenty-nine".