91134689 has 2 divisors, whose sum is σ = 91134690. Its totient is φ = 91134688.

The previous prime is 91134679. The next prime is 91134707. The reversal of 91134689 is 98643119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65480464 + 25654225 = 8092^2 + 5065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91134689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91134649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45567344 + 45567345.

It is an arithmetic number, because the mean of its divisors is an integer number (45567345).

Almost surely, 2^91134689 is an apocalyptic number.

It is an amenable number.

91134689 is a deficient number, since it is larger than the sum of its proper divisors (1).

91134689 is an equidigital number, since it uses as much as digits as its factorization.

91134689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 91134689 is about 9546.4490256849. The cubic root of 91134689 is about 450.0159484060.

The spelling of 91134689 in words is "ninety-one million, one hundred thirty-four thousand, six hundred eighty-nine".