9888397065 has 48 divisors (see below), whose sum is σ = 17501477760. Its totient is φ = 5163713280.

The previous prime is 9888397039. The next prime is 9888397093. The reversal of 9888397065 is 5607938889.

9888397065 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9888397065 - 2¹⁹ = 9887872777 is a prime.

It is a super-2 number, since 2×9888397065² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9888396993 and 9888397011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400530 + ... + 424500.

It is an arithmetic number, because the mean of its divisors is an integer number (364614120).

Almost surely, 2^9888397065 is an apocalyptic number.

It is an amenable number.

9888397065 is a deficient number, since it is larger than the sum of its proper divisors (7613080695).

9888397065 is a wasteful number, since it uses less digits than its factorization.

9888397065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24174 (or 24171 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The square root of 9888397065 is about 99440.4196742954. The cubic root of 9888397065 is about 2146.3899804645.

The spelling of 9888397065 in words is "nine billion, eight hundred eighty-eight million, three hundred ninety-seven thousand, sixty-five".