9989123 has 2 divisors, whose sum is σ = 9989124. Its totient is φ = 9989122.

The previous prime is 9989071. The next prime is 9989159. The reversal of 9989123 is 3219899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9989123 - 2⁶ = 9989059 is a prime.

It is not a weakly prime, because it can be changed into another prime (9989173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994561 + 4994562.

It is an arithmetic number, because the mean of its divisors is an integer number (4994562).

Almost surely, 2^9989123 is an apocalyptic number.

9989123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989123 is an equidigital number, since it uses as much as digits as its factorization.

9989123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 41.

The square root of 9989123 is about 3160.5573875505. The cubic root of 9989123 is about 215.3653280446.

The spelling of 9989123 in words is "nine million, nine hundred eighty-nine thousand, one hundred twenty-three".