91385 has 12 divisors (see below), whose sum is σ = 127908. Its totient is φ = 62496.

The previous prime is 91381. The next prime is 91387. The reversal of 91385 is 58319.

It can be written as a sum of positive squares in 2 ways, for example, as 41209 + 50176 = 203^2 + 224^2 .

It is not a de Polignac number, because 91385 - 2² = 91381 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 59 + ... + 431.

It is an arithmetic number, because the mean of its divisors is an integer number (10659).

2⁹¹³⁸⁵ is an apocalyptic number.

It is an amenable number.

91385 is a deficient number, since it is larger than the sum of its proper divisors (36523).

91385 is a wasteful number, since it uses less digits than its factorization.

91385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 385 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 91385 is about 302.2995203436. The cubic root of 91385 is about 45.0427577139.

The spelling of 91385 in words is "ninety-one thousand, three hundred eighty-five".