91082873 has 4 divisors (see below), whose sum is σ = 104094720. Its totient is φ = 78071028.

The previous prime is 91082869. The next prime is 91082891. The reversal of 91082873 is 37828019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37828019 = 71 ⋅532789.

It is not a de Polignac number, because 91082873 - 2² = 91082869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91082473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6505913 + ... + 6505926.

It is an arithmetic number, because the mean of its divisors is an integer number (26023680).

Almost surely, 2^91082873 is an apocalyptic number.

It is an amenable number.

91082873 is a deficient number, since it is larger than the sum of its proper divisors (13011847).

91082873 is a wasteful number, since it uses less digits than its factorization.

91082873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13011846.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 91082873 is about 9543.7347511339. The cubic root of 91082873 is about 449.9306444553.

The spelling of 91082873 in words is "ninety-one million, eighty-two thousand, eight hundred seventy-three".