99319 has 4 divisors (see below), whose sum is σ = 108360. Its totient is φ = 90280.

The previous prime is 99317. The next prime is 99347. The reversal of 99319 is 91399.

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 99319 - 2¹ = 99317 is a prime.

It is a super-2 number, since 2×99319² = 19728527522, which contains 22 as substring.

It is a Duffinian number.

99319 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99317) 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 3 ways as a sum of consecutive naturals, for example, 4504 + ... + 4525.

It is an arithmetic number, because the mean of its divisors is an integer number (27090).

2⁹⁹³¹⁹ is an apocalyptic number.

99319 is a deficient number, since it is larger than the sum of its proper divisors (9041).

99319 is a wasteful number, since it uses less digits than its factorization.

99319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040.

The product of its digits is 2187, while the sum is 31.

The square root of 99319 is about 315.1491710286. The cubic root of 99319 is about 46.3102841842.

The spelling of 99319 in words is "ninety-nine thousand, three hundred nineteen".