It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98743 = 19 ⋅5197.
It is a cyclic number.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
It is a plaindrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 34789.
It is a congruent number.
234789 is an apocalyptic number.
It is an amenable number.
34789 is a wasteful number, since it uses less digits than its factorization.
34789 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1850.
The square root of 34789 is about 186.5180956369. The cubic root of 34789 is about 32.6447977096.
The spelling of 34789 in words is "thirty-four thousand, seven hundred eighty-nine".