9743

This number is a prime.

The only left-truncatable prime, with digits in descending order, concatenated from two double-digit primes. [Loungrides]

The largest 4-digit prime with its digits in descending order, whose sum of cubes of digits is prime, i.e., 9^3+7^3+4^3+3^3=1163. [Loungrides]

The largest distinct-digit prime concatenated from two double-digit primes. [Loungrides]

According to the 2019's The Intelligence of the Nations report, the average IQ in the United States is the prime number 9743 divided by one hundred. [Lewicki]