83091 has 4 divisors (see below), whose sum is σ = 110792. Its totient is φ = 55392.

The previous prime is 83089. The next prime is 83093. The reversal of 83091 is 19038.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (83089) and next prime (83093).

It is not a de Polignac number, because 83091 - 2¹ = 83089 is a prime.

It is a super-2 number, since 2×83091² = 13808228562, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13846 + ... + 13851.

It is an arithmetic number, because the mean of its divisors is an integer number (27698).

2⁸³⁰⁹¹ is an apocalyptic number.

83091 is a deficient number, since it is larger than the sum of its proper divisors (27701).

83091 is a wasteful number, since it uses less digits than its factorization.

83091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27700.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 83091 is about 288.2550953583. The cubic root of 83091 is about 43.6366425961.

The spelling of 83091 in words is "eighty-three thousand, ninety-one".