91340873 has 8 divisors (see below), whose sum is σ = 98995848. Its totient is φ = 83775744.

The previous prime is 91340869. The next prime is 91340891. The reversal of 91340873 is 37804319.

It can be written as a sum of positive squares in 4 ways, for example, as 4624 + 91336249 = 68^2 + 9557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91340873 - 2² = 91340869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91340803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20336 + ... + 24417.

It is an arithmetic number, because the mean of its divisors is an integer number (12374481).

Almost surely, 2^91340873 is an apocalyptic number.

It is an amenable number.

91340873 is a deficient number, since it is larger than the sum of its proper divisors (7654975).

91340873 is a wasteful number, since it uses less digits than its factorization.

91340873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44923.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 91340873 is about 9557.2419138578. The cubic root of 91340873 is about 450.3550662683.

The spelling of 91340873 in words is "ninety-one million, three hundred forty thousand, eight hundred seventy-three".