9935898613 has 2 divisors, whose sum is σ = 9935898614. Its totient is φ = 9935898612.

The previous prime is 9935898569. The next prime is 9935898617. The reversal of 9935898613 is 3168985399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9797436324 + 138462289 = 98982^2 + 11767^2 .

It is an emirp because it is prime and its reverse (3168985399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9935898613 - 2²⁵ = 9902344181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9935898617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4967949306 + 4967949307.

It is an arithmetic number, because the mean of its divisors is an integer number (4967949307).

Almost surely, 2^9935898613 is an apocalyptic number.

It is an amenable number.

9935898613 is a deficient number, since it is larger than the sum of its proper divisors (1).

9935898613 is an equidigital number, since it uses as much as digits as its factorization.

9935898613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 61.

The square root of 9935898613 is about 99678.9777886993. The cubic root of 9935898613 is about 2149.8214102966.

The spelling of 9935898613 in words is "nine billion, nine hundred thirty-five million, eight hundred ninety-eight thousand, six hundred thirteen".