It is a happy number.
167999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a de Polignac number, because none of the positive numbers 2k-167999 is a prime.
It is a Duffinian number.
It is a plaindrome in base 10.
It is a congruent number.
2167999 is an apocalyptic number.
167999 is a wasteful number, since it uses less digits than its factorization.
167999 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12936.
The square root of 167999 is about 409.8768107615. The cubic root of 167999 is about 55.1783740463.
The spelling of 167999 in words is "one hundred sixty-seven thousand, nine hundred ninety-nine".