9116981 has 4 divisors (see below), whose sum is σ = 9653292. Its totient is φ = 8580672.

The previous prime is 9116977. The next prime is 9116983. The reversal of 9116981 is 1896119.

9116981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1896119 = 1289 ⋅1471.

It can be written as a sum of positive squares in 2 ways, for example, as 3964081 + 5152900 = 1991^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 9116981 - 2² = 9116977 is a prime.

It is a super-2 number, since 2×9116981² = 166238685108722, which contains 22 as substring.

It is a Duffinian 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268130 + ... + 268163.

It is an arithmetic number, because the mean of its divisors is an integer number (2413323).

Almost surely, 2^9116981 is an apocalyptic number.

It is an amenable number.

9116981 is a deficient number, since it is larger than the sum of its proper divisors (536311).

9116981 is a wasteful number, since it uses less digits than its factorization.

9116981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536310.

The product of its digits is 3888, while the sum is 35.

The square root of 9116981 is about 3019.4338873372. The cubic root of 9116981 is about 208.9057288727.

The spelling of 9116981 in words is "nine million, one hundred sixteen thousand, nine hundred eighty-one".