8994647989 has 2 divisors, whose sum is σ = 8994647990. Its totient is φ = 8994647988.

The previous prime is 8994647969. The next prime is 8994648041. The reversal of 8994647989 is 9897464998.

8994647989 is digitally balanced in base 3, 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., 7084083889 + 1910564100 = 84167^2 + 43710^2 .

It is a cyclic number.

It is not a de Polignac number, because 8994647989 - 2²¹ = 8992550837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8994647969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4497323994 + 4497323995.

It is an arithmetic number, because the mean of its divisors is an integer number (4497323995).

Almost surely, 2^8994647989 is an apocalyptic number.

It is an amenable number.

8994647989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8994647989 is an equidigital number, since it uses as much as digits as its factorization.

8994647989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282175488, while the sum is 73.

The square root of 8994647989 is about 94840.1180355655. The cubic root of 8994647989 is about 2079.6714216085.

The spelling of 8994647989 in words is "eight billion, nine hundred ninety-four million, six hundred forty-seven thousand, nine hundred eighty-nine".