9988776 has 48 divisors (see below), whose sum is σ = 30919200. Its totient is φ = 2853792.

The previous prime is 9988757. The next prime is 9988793. The reversal of 9988776 is 6778899.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9406 + ... + 10413.

It is an arithmetic number, because the mean of its divisors is an integer number (644150).

Almost surely, 2^9988776 is an apocalyptic number.

It is an amenable number.

9988776 is an abundant number, since it is smaller than the sum of its proper divisors (20930424).

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

9988776 is a wasteful number, since it uses less digits than its factorization.

9988776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19838 (or 19831 counting only the distinct ones).

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

The square root of 9988776 is about 3160.5024916934. The cubic root of 9988776 is about 215.3628342443.

The spelling of 9988776 in words is "nine million, nine hundred eighty-eight thousand, seven hundred seventy-six".