91134937 has 2 divisors, whose sum is σ = 91134938. Its totient is φ = 91134936.

The previous prime is 91134919. The next prime is 91134973. The reversal of 91134937 is 73943119.

Together with next prime (91134973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86657481 + 4477456 = 9309^2 + 2116^2 .

It is a cyclic number.

It is not a de Polignac number, because 91134937 - 2¹¹ = 91132889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91134896 and 91134905.

It is not a weakly prime, because it can be changed into another prime (91134917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45567468 + 45567469.

It is an arithmetic number, because the mean of its divisors is an integer number (45567469).

Almost surely, 2^91134937 is an apocalyptic number.

It is an amenable number.

91134937 is a deficient number, since it is larger than the sum of its proper divisors (1).

91134937 is an equidigital number, since it uses as much as digits as its factorization.

91134937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 91134937 is about 9546.4620147990. The cubic root of 91134937 is about 450.0163566071.

The spelling of 91134937 in words is "ninety-one million, one hundred thirty-four thousand, nine hundred thirty-seven".