It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is an Ulam number.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 1159945.
It is an unprimeable number.
21159945 is an apocalyptic number.
It is an amenable number.
1159945 is a wasteful number, since it uses less digits than its factorization.
1159945 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2171.
The square root of 1159945 is about 1077.0074280152. The cubic root of 1159945 is about 105.0700968068.
The spelling of 1159945 in words is "one million, one hundred fifty-nine thousand, nine hundred forty-five".