9918117 has 12 divisors (see below), whose sum is σ = 15628704. Its totient is φ = 6010920.

The previous prime is 9918091. The next prime is 9918121. The reversal of 9918117 is 7118199.

It is not a de Polignac number, because 9918117 - 2⁷ = 9917989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918127) 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 11 ways as a sum of consecutive naturals, for example, 49993 + ... + 50190.

It is an arithmetic number, because the mean of its divisors is an integer number (1302392).

Almost surely, 2^9918117 is an apocalyptic number.

It is an amenable number.

9918117 is a deficient number, since it is larger than the sum of its proper divisors (5710587).

9918117 is a wasteful number, since it uses less digits than its factorization.

9918117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100200 (or 100197 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The square root of 9918117 is about 3149.3042088690. The cubic root of 9918117 is about 214.8538180639.

The spelling of 9918117 in words is "nine million, nine hundred eighteen thousand, one hundred seventeen".