99989210 has 32 divisors (see below), whose sum is σ = 193501440. Its totient is φ = 37081152.

The previous prime is 99989209. The next prime is 99989237. The reversal of 99989210 is 1298999.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3332 + ... + 14528.

It is an arithmetic number, because the mean of its divisors is an integer number (6046920).

Almost surely, 2^99989210 is an apocalyptic number.

99989210 is a deficient number, since it is larger than the sum of its proper divisors (93512230).

99989210 is a wasteful number, since it uses less digits than its factorization.

99989210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11270.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 99989210 is about 9999.4604854462. The cubic root of 99989210 is about 464.1421885130.

It can be divided in two parts, 999 and 89210, that added together give a palindrome (90209).

The spelling of 99989210 in words is "ninety-nine million, nine hundred eighty-nine thousand, two hundred ten".