9116381 has 2 divisors, whose sum is σ = 9116382. Its totient is φ = 9116380.

The previous prime is 9116357. The next prime is 9116383. The reversal of 9116381 is 1836119.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8797156 + 319225 = 2966^2 + 565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9116381 is a prime.

It is a super-2 number, since 2×9116381² = 166216805074322, which contains 22 as substring.

Together with 9116383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9116383) 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 as a sum of consecutive naturals, namely, 4558190 + 4558191.

It is an arithmetic number, because the mean of its divisors is an integer number (4558191).

Almost surely, 2^9116381 is an apocalyptic number.

It is an amenable number.

9116381 is a deficient number, since it is larger than the sum of its proper divisors (1).

9116381 is an equidigital number, since it uses as much as digits as its factorization.

9116381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 9116381 is about 3019.3345293293. The cubic root of 9116381 is about 208.9011459891.

The spelling of 9116381 in words is "nine million, one hundred sixteen thousand, three hundred eighty-one".