9988071 has 8 divisors (see below), whose sum is σ = 13345920. Its totient is φ = 6644472.

The previous prime is 9988063. The next prime is 9988073. The reversal of 9988071 is 1708899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9988071 - 2³ = 9988063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801 + ... + 4818.

It is an arithmetic number, because the mean of its divisors is an integer number (1668240).

Almost surely, 2^9988071 is an apocalyptic number.

9988071 is a deficient number, since it is larger than the sum of its proper divisors (3357849).

9988071 is a wasteful number, since it uses less digits than its factorization.

9988071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7125.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 9988071 is about 3160.3909568280. The cubic root of 9988071 is about 215.3577674116.

The spelling of 9988071 in words is "nine million, nine hundred eighty-eight thousand, seventy-one".