8812129289 has 2 divisors, whose sum is σ = 8812129290. Its totient is φ = 8812129288.

The previous prime is 8812129279. The next prime is 8812129297. The reversal of 8812129289 is 9829212188.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8645280400 + 166848889 = 92980^2 + 12917^2 .

It is a cyclic number.

It is not a de Polignac number, because 8812129289 - 2⁴ = 8812129273 is a prime.

It is not a weakly prime, because it can be changed into another prime (8812129229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4406064644 + 4406064645.

It is an arithmetic number, because the mean of its divisors is an integer number (4406064645).

Almost surely, 2^8812129289 is an apocalyptic number.

It is an amenable number.

8812129289 is a deficient number, since it is larger than the sum of its proper divisors (1).

8812129289 is an equidigital number, since it uses as much as digits as its factorization.

8812129289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 50.

The square root of 8812129289 is about 93872.9422624006. The cubic root of 8812129289 is about 2065.5083427043.

The spelling of 8812129289 in words is "eight billion, eight hundred twelve million, one hundred twenty-nine thousand, two hundred eighty-nine".