9988173 has 12 divisors (see below), whose sum is σ = 15537340. Its totient is φ = 6146496.

The previous prime is 9988171. The next prime is 9988177. The reversal of 9988173 is 3718899.

It can be written as a sum of positive squares in 2 ways, for example, as 514089 + 9474084 = 717^2 + 3078^2 .

It is not a de Polignac number, because 9988173 - 2¹ = 9988171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42568 + ... + 42801.

Almost surely, 2^9988173 is an apocalyptic number.

It is an amenable number.

9988173 is a deficient number, since it is larger than the sum of its proper divisors (5549167).

9988173 is a wasteful number, since it uses less digits than its factorization.

9988173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85388 (or 85385 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 9988173 is about 3160.4070940308. The cubic root of 9988173 is about 215.3585005000.

The spelling of 9988173 in words is "nine million, nine hundred eighty-eight thousand, one hundred seventy-three".