8969643121 has 2 divisors, whose sum is σ = 8969643122. Its totient is φ = 8969643120.

The previous prime is 8969643107. The next prime is 8969643161. The reversal of 8969643121 is 1213469698.

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., 8964302400 + 5340721 = 94680^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 8969643121 - 2¹¹ = 8969641073 is a prime.

It is not a weakly prime, because it can be changed into another prime (8969643161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4484821560 + 4484821561.

It is an arithmetic number, because the mean of its divisors is an integer number (4484821561).

Almost surely, 2^8969643121 is an apocalyptic number.

It is an amenable number.

8969643121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8969643121 is an equidigital number, since it uses as much as digits as its factorization.

8969643121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 8969643121 is about 94708.1998614692. The cubic root of 8969643121 is about 2077.7424903910.

The spelling of 8969643121 in words is "eight billion, nine hundred sixty-nine million, six hundred forty-three thousand, one hundred twenty-one".