91808041 has 16 divisors (see below), whose sum is σ = 106178688. Its totient is φ = 78624000.

The previous prime is 91808029. The next prime is 91808047. The reversal of 91808041 is 14080819.

It is not a de Polignac number, because 91808041 - 2⁷ = 91807913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91807994 and 91808012.

It is not an unprimeable number, because it can be changed into a prime (91808047) 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 in 15 ways as a sum of consecutive naturals, for example, 12766 + ... + 18616.

It is an arithmetic number, because the mean of its divisors is an integer number (6636168).

Almost surely, 2^91808041 is an apocalyptic number.

It is an amenable number.

91808041 is a deficient number, since it is larger than the sum of its proper divisors (14370647).

91808041 is a wasteful number, since it uses less digits than its factorization.

91808041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 91808041 is about 9581.6512668746. The cubic root of 91808041 is about 451.1215497278.

The spelling of 91808041 in words is "ninety-one million, eight hundred eight thousand, forty-one".