8999730197 has 2 divisors, whose sum is σ = 8999730198. Its totient is φ = 8999730196.

The previous prime is 8999730161. The next prime is 8999730241. The reversal of 8999730197 is 7910379998.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8950295236 + 49434961 = 94606^2 + 7031^2 .

It is a cyclic number.

It is not a de Polignac number, because 8999730197 - 2³² = 4704762901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8999730097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499865098 + 4499865099.

It is an arithmetic number, because the mean of its divisors is an integer number (4499865099).

Almost surely, 2^8999730197 is an apocalyptic number.

It is an amenable number.

8999730197 is a deficient number, since it is larger than the sum of its proper divisors (1).

8999730197 is an equidigital number, since it uses as much as digits as its factorization.

8999730197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7715736, while the sum is 62.

The square root of 8999730197 is about 94866.9078077282. The cubic root of 8999730197 is about 2080.0630371829.

The spelling of 8999730197 in words is "eight billion, nine hundred ninety-nine million, seven hundred thirty thousand, one hundred ninety-seven".