9208916489 has 2 divisors, whose sum is σ = 9208916490. Its totient is φ = 9208916488.

The previous prime is 9208916467. The next prime is 9208916501. The reversal of 9208916489 is 9846198029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5727916489 + 3481000000 = 75683^2 + 59000^2 .

It is an emirp because it is prime and its reverse (9846198029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9208916489 - 2²⁴ = 9192139273 is a prime.

It is not a weakly prime, because it can be changed into another prime (9208916459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4604458244 + 4604458245.

It is an arithmetic number, because the mean of its divisors is an integer number (4604458245).

Almost surely, 2^9208916489 is an apocalyptic number.

It is an amenable number.

9208916489 is a deficient number, since it is larger than the sum of its proper divisors (1).

9208916489 is an equidigital number, since it uses as much as digits as its factorization.

9208916489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The square root of 9208916489 is about 95963.0996216775. The cubic root of 9208916489 is about 2096.0558234488.

The spelling of 9208916489 in words is "nine billion, two hundred eight million, nine hundred sixteen thousand, four hundred eighty-nine".