9988877 has 16 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 8819712.

The previous prime is 9988873. The next prime is 9988879. The reversal of 9988877 is 7788899.

It is a cyclic number.

It is not a de Polignac number, because 9988877 - 2² = 9988873 is a prime.

It is a super-2 number, since 2×9988877² = 199555327442258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988873) 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, 22853 + ... + 23285.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^9988877 is an apocalyptic number.

It is an amenable number.

9988877 is a deficient number, since it is larger than the sum of its proper divisors (1260403).

9988877 is a wasteful number, since it uses less digits than its factorization.

9988877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532.

The product of its digits is 2032128, while the sum is 56.

The square root of 9988877 is about 3160.5184701248. The cubic root of 9988877 is about 215.3635601115.

The spelling of 9988877 in words is "nine million, nine hundred eighty-eight thousand, eight hundred seventy-seven".