91134949 has 4 divisors (see below), whose sum is σ = 91154700. Its totient is φ = 91115200.

The previous prime is 91134937. The next prime is 91134973. The reversal of 91134949 is 94943119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94943119 = 83 ⋅1143893.

It can be written as a sum of positive squares in 2 ways, for example, as 48650625 + 42484324 = 6975^2 + 6518^2 .

It is a cyclic number.

It is not a de Polignac number, because 91134949 - 2⁵ = 91134917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91134919) 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 in 3 ways as a sum of consecutive naturals, for example, 1149 + ... + 13549.

It is an arithmetic number, because the mean of its divisors is an integer number (22788675).

Almost surely, 2^91134949 is an apocalyptic number.

It is an amenable number.

91134949 is a deficient number, since it is larger than the sum of its proper divisors (19751).

91134949 is a wasteful number, since it uses less digits than its factorization.

91134949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19750.

The product of its digits is 34992, while the sum is 40.

The square root of 91134949 is about 9546.4626433041. The cubic root of 91134949 is about 450.0163763588.

The spelling of 91134949 in words is "ninety-one million, one hundred thirty-four thousand, nine hundred forty-nine".