99491 has 8 divisors (see below), whose sum is σ = 116064. Its totient is φ = 83520.

The previous prime is 99487. The next prime is 99497. The reversal of 99491 is 19499.

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 99491 - 2² = 99487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99497) 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 7 ways as a sum of consecutive naturals, for example, 311 + ... + 543.

It is an arithmetic number, because the mean of its divisors is an integer number (14508).

2⁹⁹⁴⁹¹ is an apocalyptic number.

99491 is a deficient number, since it is larger than the sum of its proper divisors (16573).

99491 is a wasteful number, since it uses less digits than its factorization.

99491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its digits is 2916, while the sum is 32.

The square root of 99491 is about 315.4219396301. The cubic root of 99491 is about 46.3370020501.

The spelling of 99491 in words is "ninety-nine thousand, four hundred ninety-one".