91383 has 8 divisors (see below), whose sum is σ = 123648. Its totient is φ = 60024.

The previous prime is 91381. The next prime is 91387. The reversal of 91383 is 38319.

91383 is nontrivially palindromic in base 11.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91383 - 2¹ = 91381 is a prime.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 432.

It is an arithmetic number, because the mean of its divisors is an integer number (15456).

2⁹¹³⁸³ is an apocalyptic number.

91383 is a deficient number, since it is larger than the sum of its proper divisors (32265).

91383 is a wasteful number, since it uses less digits than its factorization.

91383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453.

The product of its digits is 648, while the sum is 24.

The square root of 91383 is about 302.2962123481. The cubic root of 91383 is about 45.0424291181.

It can be divided in two parts, 91 and 383, that added together give a palindrome (474).

The spelling of 91383 in words is "ninety-one thousand, three hundred eighty-three".