8606889989 has 2 divisors, whose sum is σ = 8606889990. Its totient is φ = 8606889988.

The previous prime is 8606889947. The next prime is 8606890001. The reversal of 8606889989 is 9899886068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6287697025 + 2319192964 = 79295^2 + 48158^2 .

It is a cyclic number.

It is not a de Polignac number, because 8606889989 - 2²⁸ = 8338454533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8606889919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4303444994 + 4303444995.

It is an arithmetic number, because the mean of its divisors is an integer number (4303444995).

Almost surely, 2^8606889989 is an apocalyptic number.

It is an amenable number.

8606889989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8606889989 is an equidigital number, since it uses as much as digits as its factorization.

8606889989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107495424, while the sum is 71.

The square root of 8606889989 is about 92773.3258485433. The cubic root of 8606889989 is about 2049.3466082662.

The spelling of 8606889989 in words is "eight billion, six hundred six million, eight hundred eighty-nine thousand, nine hundred eighty-nine".