8089889209 has 2 divisors, whose sum is σ = 8089889210. Its totient is φ = 8089889208.

The previous prime is 8089889201. The next prime is 8089889221. The reversal of 8089889209 is 9029889808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7578224809 + 511664400 = 87053^2 + 22620^2 .

It is a cyclic number.

It is not a de Polignac number, because 8089889209 - 2³ = 8089889201 is a prime.

It is not a weakly prime, because it can be changed into another prime (8089889201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4044944604 + 4044944605.

It is an arithmetic number, because the mean of its divisors is an integer number (4044944605).

Almost surely, 2^8089889209 is an apocalyptic number.

It is an amenable number.

8089889209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8089889209 is an equidigital number, since it uses as much as digits as its factorization.

8089889209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 61.

The square root of 8089889209 is about 89943.8113991174. The cubic root of 8089889209 is about 2007.4628854501.

The spelling of 8089889209 in words is "eight billion, eighty-nine million, eight hundred eighty-nine thousand, two hundred nine".