9776988 has 54 divisors (see below), whose sum is σ = 26778024. Its totient is φ = 3006432.

The previous prime is 9776981. The next prime is 9776993. The reversal of 9776988 is 8896779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9776981) 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 in 17 ways as a sum of consecutive naturals, for example, 5281 + ... + 6887.

Almost surely, 2^9776988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9776988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13389012).

9776988 is an abundant number, since it is smaller than the sum of its proper divisors (17001036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9776988 is a wasteful number, since it uses less digits than its factorization.

9776988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643 (or 1625 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 9776988 is about 3126.8175514411. The cubic root of 9776988 is about 213.8298644826.

The spelling of 9776988 in words is "nine million, seven hundred seventy-six thousand, nine hundred eighty-eight".