99210 has 16 divisors (see below), whose sum is σ = 238176. Its totient is φ = 26448.

The previous prime is 99191. The next prime is 99223. The reversal of 99210 is 1299.

It is a happy number.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99210.

It is an unprimeable number.

99210 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (14886).

2⁹⁹²¹⁰ is an apocalyptic number.

99210 is an abundant number, since it is smaller than the sum of its proper divisors (138966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119088).

99210 is a wasteful number, since it uses less digits than its factorization.

99210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 99210 is about 314.9761895763. The cubic root of 99210 is about 46.2933365416.

The spelling of 99210 in words is "ninety-nine thousand, two hundred ten".