9117889 has 4 divisors (see below), whose sum is σ = 9946800. Its totient is φ = 8288980.

The previous prime is 9117887. The next prime is 9117893. The reversal of 9117889 is 9887119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9117889 - 2¹ = 9117887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9117883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414439 + ... + 414460.

It is an arithmetic number, because the mean of its divisors is an integer number (2486700).

Almost surely, 2^9117889 is an apocalyptic number.

It is an amenable number.

9117889 is a deficient number, since it is larger than the sum of its proper divisors (828911).

9117889 is a wasteful number, since it uses less digits than its factorization.

9117889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828910.

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

The square root of 9117889 is about 3019.5842429050. The cubic root of 9117889 is about 208.9126639207.

The spelling of 9117889 in words is "nine million, one hundred seventeen thousand, eight hundred eighty-nine".