9899655737 has 2 divisors, whose sum is σ = 9899655738. Its totient is φ = 9899655736.

The previous prime is 9899655707. The next prime is 9899655739. The reversal of 9899655737 is 7375569989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9485980816 + 413674921 = 97396^2 + 20339^2 .

It is a cyclic number.

It is not a de Polignac number, because 9899655737 - 2¹⁸ = 9899393593 is a prime.

It is a super-3 number, since 3×9899655737³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 9899655739, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9899655739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949827868 + 4949827869.

It is an arithmetic number, because the mean of its divisors is an integer number (4949827869).

Almost surely, 2^9899655737 is an apocalyptic number.

It is an amenable number.

9899655737 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899655737 is an equidigital number, since it uses as much as digits as its factorization.

9899655737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128595600, while the sum is 68.

The square root of 9899655737 is about 99497.0137089551. The cubic root of 9899655737 is about 2147.2042794525.

The spelling of 9899655737 in words is "nine billion, eight hundred ninety-nine million, six hundred fifty-five thousand, seven hundred thirty-seven".