9898559017 has 2 divisors, whose sum is σ = 9898559018. Its totient is φ = 9898559016.

The previous prime is 9898558981. The next prime is 9898559023. The reversal of 9898559017 is 7109558989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9702447001 + 196112016 = 98501^2 + 14004^2 .

It is a cyclic number.

It is not a de Polignac number, because 9898559017 - 2¹⁵ = 9898526249 is a prime.

It is a super-2 number, since 2×9898559017² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9898559117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949279508 + 4949279509.

It is an arithmetic number, because the mean of its divisors is an integer number (4949279509).

Almost surely, 2^9898559017 is an apocalyptic number.

It is an amenable number.

9898559017 is a deficient number, since it is larger than the sum of its proper divisors (1).

9898559017 is an equidigital number, since it uses as much as digits as its factorization.

9898559017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 61.

The square root of 9898559017 is about 99491.5022351155. The cubic root of 9898559017 is about 2147.1249848148.

The spelling of 9898559017 in words is "nine billion, eight hundred ninety-eight million, five hundred fifty-nine thousand, seventeen".