91916740 has 24 divisors (see below), whose sum is σ = 201418560. Its totient is φ = 35167968.

The previous prime is 91916731. The next prime is 91916753. The reversal of 91916740 is 4761919.

It is a self number, because there is not a number n which added to its sum of digits gives 91916740.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 99450 + ... + 100369.

It is an arithmetic number, because the mean of its divisors is an integer number (8392440).

Almost surely, 2^91916740 is an apocalyptic number.

It is an amenable number.

91916740 is an abundant number, since it is smaller than the sum of its proper divisors (109501820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91916740 is a wasteful number, since it uses less digits than its factorization.

91916740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199851 (or 199849 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 91916740 is about 9587.3218366758. The cubic root of 91916740 is about 451.2995193289.

It can be divided in two parts, 9191 and 6740, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 91916740 in words is "ninety-one million, nine hundred sixteen thousand, seven hundred forty".