9116989 has 12 divisors (see below), whose sum is σ = 10854624. Its totient is φ = 7631064.

The previous prime is 9116983. The next prime is 9117011. The reversal of 9116989 is 9896119.

It is not a de Polignac number, because 9116989 - 2⁵ = 9116957 is a prime.

It is a super-2 number, since 2×9116989² = 166238976852242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

9116989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9116983) 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, 57 + ... + 4270.

It is an arithmetic number, because the mean of its divisors is an integer number (904552).

Almost surely, 2^9116989 is an apocalyptic number.

It is an amenable number.

9116989 is a deficient number, since it is larger than the sum of its proper divisors (1737635).

9116989 is a wasteful number, since it uses less digits than its factorization.

9116989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4377 counting only the distinct ones).

The product of its digits is 34992, while the sum is 43.

The square root of 9116989 is about 3019.4352120885. The cubic root of 9116989 is about 208.9057899764.

The spelling of 9116989 in words is "nine million, one hundred sixteen thousand, nine hundred eighty-nine".