9988767 has 12 divisors (see below), whose sum is σ = 14461720. Its totient is φ = 6643728.

The previous prime is 9988757. The next prime is 9988793. The reversal of 9988767 is 7678899.

It is not a de Polignac number, because 9988767 - 2¹⁴ = 9972383 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988747) 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 11 ways as a sum of consecutive naturals, for example, 3909 + ... + 5937.

Almost surely, 2^9988767 is an apocalyptic number.

9988767 is a deficient number, since it is larger than the sum of its proper divisors (4472953).

9988767 is a wasteful number, since it uses less digits than its factorization.

9988767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582 (or 2579 counting only the distinct ones).

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

The square root of 9988767 is about 3160.5010678688. The cubic root of 9988767 is about 215.3627695628.

The spelling of 9988767 in words is "nine million, nine hundred eighty-eight thousand, seven hundred sixty-seven".