8996666989 has 2 divisors, whose sum is σ = 8996666990. Its totient is φ = 8996666988.

The previous prime is 8996666983. The next prime is 8996666999. The reversal of 8996666989 is 9896666998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7685502889 + 1311164100 = 87667^2 + 36210^2 .

It is a cyclic number.

It is not a de Polignac number, because 8996666989 - 2⁹ = 8996666477 is a prime.

It is a super-2 number, since 2×8996666989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8996666983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498333494 + 4498333495.

It is an arithmetic number, because the mean of its divisors is an integer number (4498333495).

Almost surely, 2^8996666989 is an apocalyptic number.

It is an amenable number.

8996666989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8996666989 is an equidigital number, since it uses as much as digits as its factorization.

8996666989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544195584, while the sum is 76.

The square root of 8996666989 is about 94850.7616680014. The cubic root of 8996666989 is about 2079.8270157084.

Subtracting 8996666989 from its reverse (9896666998), we obtain a palindrome (900000009).

The spelling of 8996666989 in words is "eight billion, nine hundred ninety-six million, six hundred sixty-six thousand, nine hundred eighty-nine".