8987117897 has 2 divisors, whose sum is σ = 8987117898. Its totient is φ = 8987117896.

The previous prime is 8987117891. The next prime is 8987117903. The reversal of 8987117897 is 7987117898.

It is a balanced prime because it is at equal distance from previous prime (8987117891) and next prime (8987117903).

It can be written as a sum of positive squares in only one way, i.e., 6147187216 + 2839930681 = 78404^2 + 53291^2 .

It is a cyclic number.

It is not a de Polignac number, because 8987117897 - 2¹⁸ = 8986855753 is a prime.

It is not a weakly prime, because it can be changed into another prime (8987117891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4493558948 + 4493558949.

It is an arithmetic number, because the mean of its divisors is an integer number (4493558949).

Almost surely, 2^8987117897 is an apocalyptic number.

It is an amenable number.

8987117897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8987117897 is an equidigital number, since it uses as much as digits as its factorization.

8987117897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 65.

The square root of 8987117897 is about 94800.4108482658. The cubic root of 8987117897 is about 2079.0909101284.

Subtracting from 8987117897 its reverse (7987117898), we obtain a palindrome (999999999).

The spelling of 8987117897 in words is "eight billion, nine hundred eighty-seven million, one hundred seventeen thousand, eight hundred ninety-seven".