159998 has 4 divisors (see below), whose sum is σ = 240000. Its totient is φ = 79998.

The previous prime is 159979. The next prime is 160001. The reversal of 159998 is 899951.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number *n* which divided by its sum of digits gives 159998.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39998 + ... + 40001.

It is an arithmetic number, because the mean of its divisors is an integer number (60000).

2^{159998} is an apocalyptic number.

159998 is a deficient number, since it is larger than the sum of its proper divisors (80002).

159998 is an equidigital number, since it uses as much as digits as its factorization.

159998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80001.

The product of its digits is 29160, while the sum is 41.

The square root of 159998 is about 399.9974999922. The cubic root of 159998 is about 54.2881261295.

The spelling of 159998 in words is "one hundred fifty-nine thousand, nine hundred ninety-eight".

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