9897118 has 24 divisors (see below), whose sum is σ = 18841464. Its totient is φ = 3855600.

The previous prime is 9897109. The next prime is 9897127. The reversal of 9897118 is 8117989.

It is an interprime number because it is at equal distance from previous prime (9897109) and next prime (9897127).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3513 + ... + 5668.

It is an arithmetic number, because the mean of its divisors is an integer number (785061).

Almost surely, 2^9897118 is an apocalyptic number.

9897118 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

9897118 is a deficient number, since it is larger than the sum of its proper divisors (8944346).

9897118 is a wasteful number, since it uses less digits than its factorization.

9897118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208 (or 9201 counting only the distinct ones).

The product of its digits is 36288, while the sum is 43.

The square root of 9897118 is about 3145.9685313111. The cubic root of 9897118 is about 214.7020788041.

It can be divided in two parts, 98971 and 18, that added together give a palindrome (98989).

The spelling of 9897118 in words is "nine million, eight hundred ninety-seven thousand, one hundred eighteen".