99271 has 4 divisors (see below), whose sum is σ = 101992. Its totient is φ = 96552.

The previous prime is 99259. The next prime is 99277. The reversal of 99271 is 17299.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99271 - 2¹³ = 91079 is a prime.

It is a Duffinian number.

99271 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99277) 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, 1305 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (25498).

2⁹⁹²⁷¹ is an apocalyptic number.

99271 is a deficient number, since it is larger than the sum of its proper divisors (2721).

99271 is a wasteful number, since it uses less digits than its factorization.

99271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720.

The product of its digits is 1134, while the sum is 28.

The square root of 99271 is about 315.0730074126. The cubic root of 99271 is about 46.3028225308.

Adding to 99271 its sum of digits (28), we get a palindrome (99299).

The spelling of 99271 in words is "ninety-nine thousand, two hundred seventy-one".