91269 has 6 divisors (see below), whose sum is σ = 131846. Its totient is φ = 60840.

The previous prime is 91253. The next prime is 91283. The reversal of 91269 is 96219.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65025 + 26244 = 255^2 + 162^2 .

It is not a de Polignac number, because 91269 - 2⁴ = 91253 is a prime.

It is a super-2 number, since 2×91269² = 16660060722, which contains 22 as substring.

It is a Duffinian number.

91269 is a lucky number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91229) 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 5 ways as a sum of consecutive naturals, for example, 5062 + ... + 5079.

2⁹¹²⁶⁹ is an apocalyptic number.

It is an amenable number.

91269 is a deficient number, since it is larger than the sum of its proper divisors (40577).

91269 is a wasteful number, since it uses less digits than its factorization.

91269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10147 (or 10144 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 91269 is about 302.1075967267. The cubic root of 91269 is about 45.0236912288.

Subtracting 91269 from its reverse (96219), we obtain a triangular number (4950 = T₉₉).

The spelling of 91269 in words is "ninety-one thousand, two hundred sixty-nine".