9917147 has 8 divisors (see below), whose sum is σ = 10282800. Its totient is φ = 9556704.

The previous prime is 9917129. The next prime is 9917153. The reversal of 9917147 is 7417199.

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 9917147 - 2⁸ = 9916891 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 9917147.

It is not an unprimeable number, because it can be changed into a prime (9917447) 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, 2804 + ... + 5262.

It is an arithmetic number, because the mean of its divisors is an integer number (1285350).

Almost surely, 2^9917147 is an apocalyptic number.

9917147 is a deficient number, since it is larger than the sum of its proper divisors (365653).

9917147 is a wasteful number, since it uses less digits than its factorization.

9917147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605.

The product of its digits is 15876, while the sum is 38.

The square root of 9917147 is about 3149.1502028325. The cubic root of 9917147 is about 214.8468135422.

The spelling of 9917147 in words is "nine million, nine hundred seventeen thousand, one hundred forty-seven".