4789999domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers n such that the number formed by the digits of 2n sorted in descending order is equal to the sum of the divisors of n after the digits of each divisor have been sorted in descending order (all zeros dropped).at n=27A083389Primes with digit sum = 55.at n=5A106783Prime numbersat n=334801