89990 has 8 divisors (see below), whose sum is σ = 162000. Its totient is φ = 35992.

The previous prime is 89989. The next prime is 90001. The reversal of 89990 is 9998.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 89990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4490 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (20250).

2⁸⁹⁹⁹⁰ is an apocalyptic number.

89990 is a deficient number, since it is larger than the sum of its proper divisors (72010).

89990 is a wasteful number, since it uses less digits than its factorization.

89990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 89990 is about 299.9833328703. The cubic root of 89990 is about 44.8123876246.

It can be divided in two parts, 899 and 90, that added together give a palindrome (989).

The spelling of 89990 in words is "eighty-nine thousand, nine hundred ninety".