9797987077 has 16 divisors (see below), whose sum is σ = 10451358720. Its totient is φ = 9153301248.

The previous prime is 9797987063. The next prime is 9797987081. The reversal of 9797987077 is 7707897979.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9797987077 is a prime.

It is a super-2 number, since 2×9797987077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9797986997 and 9797987015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9797987047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4693728 + ... + 4695814.

It is an arithmetic number, because the mean of its divisors is an integer number (653209920).

Almost surely, 2^9797987077 is an apocalyptic number.

It is an amenable number.

9797987077 is a deficient number, since it is larger than the sum of its proper divisors (653371643).

9797987077 is a wasteful number, since it uses less digits than its factorization.

9797987077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 98018424, while the sum is 70.

The square root of 9797987077 is about 98984.7820475451. The cubic root of 9797987077 is about 2139.8284339268.

The spelling of 9797987077 in words is "nine billion, seven hundred ninety-seven million, nine hundred eighty-seven thousand, seventy-seven".