8989121117 has 2 divisors, whose sum is σ = 8989121118. Its totient is φ = 8989121116.

The previous prime is 8989121111. The next prime is 8989121123. The reversal of 8989121117 is 7111219898.

It is a balanced prime because it is at equal distance from previous prime (8989121111) and next prime (8989121123).

It can be written as a sum of positive squares in only one way, i.e., 5424911716 + 3564209401 = 73654^2 + 59701^2 .

It is a cyclic number.

It is not a de Polignac number, because 8989121117 - 2¹⁰ = 8989120093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8989121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4494560558 + 4494560559.

It is an arithmetic number, because the mean of its divisors is an integer number (4494560559).

Almost surely, 2^8989121117 is an apocalyptic number.

It is an amenable number.

8989121117 is a deficient number, since it is larger than the sum of its proper divisors (1).

8989121117 is an equidigital number, since it uses as much as digits as its factorization.

8989121117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 47.

The square root of 8989121117 is about 94810.9757201138. The cubic root of 8989121117 is about 2079.2453744453.

The spelling of 8989121117 in words is "eight billion, nine hundred eighty-nine million, one hundred twenty-one thousand, one hundred seventeen".