9988447 has 8 divisors (see below), whose sum is σ = 11439776. Its totient is φ = 8543232.

The previous prime is 9988411. The next prime is 9988453. The reversal of 9988447 is 7448899.

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

It is a cyclic number.

It is not a de Polignac number, because 9988447 - 2¹⁹ = 9464159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9988447.

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 7 ways as a sum of consecutive naturals, for example, 2803 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (1429972).

Almost surely, 2^9988447 is an apocalyptic number.

9988447 is a deficient number, since it is larger than the sum of its proper divisors (1451329).

9988447 is a wasteful number, since it uses less digits than its factorization.

9988447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057.

The product of its digits is 580608, while the sum is 49.

The square root of 9988447 is about 3160.4504425793. The cubic root of 9988447 is about 215.3604697521.

The spelling of 9988447 in words is "nine million, nine hundred eighty-eight thousand, four hundred forty-seven".