91084 has 12 divisors (see below), whose sum is σ = 182224. Its totient is φ = 39024.

The previous prime is 91081. The next prime is 91097. The reversal of 91084 is 48019.

91084 = T₁₀₇ + T₁₀₈ + ... + T₁₂₀.

91084 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91081) 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, 1599 + ... + 1654.

2⁹¹⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

91084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91112).

91084 is a wasteful number, since it uses less digits than its factorization.

91084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264 (or 3262 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 91084 is about 301.8012591094. The cubic root of 91084 is about 44.9932500164.

The spelling of 91084 in words is "ninety-one thousand, eighty-four".