9118985 has 4 divisors (see below), whose sum is σ = 10942788. Its totient is φ = 7295184.

The previous prime is 9118979. The next prime is 9118997. The reversal of 9118985 is 5898119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5898119 = 89 ⋅66271.

It can be written as a sum of positive squares in 2 ways, for example, as 3087049 + 6031936 = 1757^2 + 2456^2 .

It is a cyclic number.

It is not a de Polignac number, because 9118985 - 2²⁰ = 8070409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911894 + ... + 911903.

It is an arithmetic number, because the mean of its divisors is an integer number (2735697).

Almost surely, 2^9118985 is an apocalyptic number.

It is an amenable number.

9118985 is a deficient number, since it is larger than the sum of its proper divisors (1823803).

9118985 is a wasteful number, since it uses less digits than its factorization.

9118985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823802.

The product of its digits is 25920, while the sum is 41.

The square root of 9118985 is about 3019.7657193895. The cubic root of 9118985 is about 208.9210342466.

The spelling of 9118985 in words is "nine million, one hundred eighteen thousand, nine hundred eighty-five".