91040847 has 16 divisors (see below), whose sum is σ = 124798080. Its totient is φ = 59002272.

The previous prime is 91040827. The next prime is 91040861. The reversal of 91040847 is 74804019.

It is not a de Polignac number, because 91040847 - 2⁶ = 91040783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91040827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27729 + ... + 30837.

It is an arithmetic number, because the mean of its divisors is an integer number (7799880).

Almost surely, 2^91040847 is an apocalyptic number.

91040847 is a deficient number, since it is larger than the sum of its proper divisors (33757233).

91040847 is a wasteful number, since it uses less digits than its factorization.

91040847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 91040847 is about 9541.5327385070. The cubic root of 91040847 is about 449.8614338797.

The spelling of 91040847 in words is "ninety-one million, forty thousand, eight hundred forty-seven".