9180989 has 2 divisors, whose sum is σ = 9180990. Its totient is φ = 9180988.

The previous prime is 9180967. The next prime is 9181013. The reversal of 9180989 is 9890819.

9180989 is digitally balanced in base 2, 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., 8655364 + 525625 = 2942^2 + 725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9180989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9180959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590494 + 4590495.

It is an arithmetic number, because the mean of its divisors is an integer number (4590495).

Almost surely, 2^9180989 is an apocalyptic number.

It is an amenable number.

9180989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9180989 is an equidigital number, since it uses as much as digits as its factorization.

9180989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 9180989 is about 3030.0146864331. The cubic root of 9180989 is about 209.3934804806.

The spelling of 9180989 in words is "nine million, one hundred eighty thousand, nine hundred eighty-nine".