9720089 has 2 divisors, whose sum is σ = 9720090. Its totient is φ = 9720088.

The previous prime is 9720083. The next prime is 9720097. The reversal of 9720089 is 9800279.

9720089 is digitally balanced in base 3, because in such base 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., 9406489 + 313600 = 3067^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 9720089 - 2¹⁶ = 9654553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9720083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860044 + 4860045.

It is an arithmetic number, because the mean of its divisors is an integer number (4860045).

Almost surely, 2^9720089 is an apocalyptic number.

It is an amenable number.

9720089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9720089 is an equidigital number, since it uses as much as digits as its factorization.

9720089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 9720089 is about 3117.7057269730. The cubic root of 9720089 is about 213.4142496327.

The spelling of 9720089 in words is "nine million, seven hundred twenty thousand, eighty-nine".