99243 has 6 divisors (see below), whose sum is σ = 143364. Its totient is φ = 66156.

The previous prime is 99241. The next prime is 99251. The reversal of 99243 is 34299.

It is not a de Polignac number, because 99243 - 2¹ = 99241 is a prime.

99243 is a modest number, since divided by 243 gives 99 as remainder.

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 5 ways as a sum of consecutive naturals, for example, 5505 + ... + 5522.

It is an arithmetic number, because the mean of its divisors is an integer number (23894).

2⁹⁹²⁴³ is an apocalyptic number.

99243 is a deficient number, since it is larger than the sum of its proper divisors (44121).

99243 is a wasteful number, since it uses less digits than its factorization.

99243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11033 (or 11030 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 99243 is about 315.0285701329. The cubic root of 99243 is about 46.2984687889.

It can be divided in two parts, 992 and 43, that added together give a triangular number (1035 = T₄₅).

The spelling of 99243 in words is "ninety-nine thousand, two hundred forty-three".