97089989 has 2 divisors, whose sum is σ = 97089990. Its totient is φ = 97089988.

The previous prime is 97089893. The next prime is 97089991. The reversal of 97089989 is 98998079.

97089989 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 26697889 = 8390^2 + 5167^2 .

It is a cyclic number.

It is not a de Polignac number, because 97089989 - 2²⁴ = 80312773 is a prime.

Together with 97089991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97089089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48544994 + 48544995.

It is an arithmetic number, because the mean of its divisors is an integer number (48544995).

Almost surely, 2^97089989 is an apocalyptic number.

It is an amenable number.

97089989 is a deficient number, since it is larger than the sum of its proper divisors (1).

97089989 is an equidigital number, since it uses as much as digits as its factorization.

97089989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 97089989 is about 9853.4252420161. The cubic root of 97089989 is about 459.6121320874.

The spelling of 97089989 in words is "ninety-seven million, eighty-nine thousand, nine hundred eighty-nine".