99989220 has 24 divisors (see below), whose sum is σ = 279969984. Its totient is φ = 26663776.

The previous prime is 99989209. The next prime is 99989237. The reversal of 99989220 is 2298999.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 99989220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833184 + ... + 833303.

It is an arithmetic number, because the mean of its divisors is an integer number (11665416).

Almost surely, 2^99989220 is an apocalyptic number.

It is an amenable number.

99989220 is an abundant number, since it is smaller than the sum of its proper divisors (179980764).

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

99989220 is a wasteful number, since it uses less digits than its factorization.

99989220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666499 (or 1666497 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 99989220 is about 9999.4609854732. The cubic root of 99989220 is about 464.1422039860.

The spelling of 99989220 in words is "ninety-nine million, nine hundred eighty-nine thousand, two hundred twenty".