8994664997 has 16 divisors (see below), whose sum is σ = 9859698432. Its totient is φ = 8171896320.

The previous prime is 8994664979. The next prime is 8994665011. The reversal of 8994664997 is 7994664998.

It is a cyclic number.

It is not a de Polignac number, because 8994664997 - 2⁶ = 8994664933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8994664997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8994664907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18779 + ... + 135432.

It is an arithmetic number, because the mean of its divisors is an integer number (616231152).

Almost surely, 2^8994664997 is an apocalyptic number.

It is an amenable number.

8994664997 is a deficient number, since it is larger than the sum of its proper divisors (865033435).

8994664997 is a wasteful number, since it uses less digits than its factorization.

8994664997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154348.

The product of its digits is 211631616, while the sum is 71.

The square root of 8994664997 is about 94840.2077022188. The cubic root of 8994664997 is about 2079.6727324262.

Subtracting from 8994664997 its reverse (7994664998), we obtain a palindrome (999999999).

The spelling of 8994664997 in words is "eight billion, nine hundred ninety-four million, six hundred sixty-four thousand, nine hundred ninety-seven".