99291 has 8 divisors (see below), whose sum is σ = 138240. Its totient is φ = 63272.

The previous prime is 99289. The next prime is 99317. The reversal of 99291 is 19299.

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

It is a cyclic number.

It is not a de Polignac number, because 99291 - 2¹ = 99289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2⁹⁹²⁹¹ is an apocalyptic number.

99291 is a deficient number, since it is larger than the sum of its proper divisors (38949).

99291 is a wasteful number, since it uses less digits than its factorization.

99291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465.

The product of its digits is 1458, while the sum is 30.

The square root of 99291 is about 315.1047444898. The cubic root of 99291 is about 46.3059318453.

The spelling of 99291 in words is "ninety-nine thousand, two hundred ninety-one".