91386 has 12 divisors (see below), whose sum is σ = 198042. Its totient is φ = 30456.

The previous prime is 91381. The next prime is 91387. The reversal of 91386 is 68319.

It can be written as a sum of positive squares in only one way, i.e., 53361 + 38025 = 231^2 + 195^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2521 + ... + 2556.

2⁹¹³⁸⁶ is an apocalyptic number.

91386 is an abundant number, since it is smaller than the sum of its proper divisors (106656).

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

91386 is a wasteful number, since it uses less digits than its factorization.

91386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085 (or 5082 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 91386 is about 302.3011743279. The cubic root of 91386 is about 45.0429220100.

It can be divided in two parts, 913 and 86, that added together give a palindrome (999).

The spelling of 91386 in words is "ninety-one thousand, three hundred eighty-six".