89998 has 8 divisors (see below), whose sum is σ = 142992. Its totient is φ = 42336.

The previous prime is 89989. The next prime is 90001.

89998 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

89998 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 1290 + ... + 1357.

It is an arithmetic number, because the mean of its divisors is an integer number (17874).

2⁸⁹⁹⁹⁸ is an apocalyptic number.

89998 is a deficient number, since it is larger than the sum of its proper divisors (52994).

89998 is a wasteful number, since it uses less digits than its factorization.

89998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666.

The product of its digits is 46656, while the sum is 43.

The square root of 89998 is about 299.9966666481. The cubic root of 89998 is about 44.8137155072.

The spelling of 89998 in words is "eighty-nine thousand, nine hundred ninety-eight".