99859212 has 72 divisors (see below), whose sum is σ = 269796800. Its totient is φ = 31049568.

The previous prime is 99859171. The next prime is 99859213. The reversal of 99859212 is 21295899.

It is not an unprimeable number, because it can be changed into a prime (99859213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44739 + ... + 46917.

Almost surely, 2^99859212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99859212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134898400).

99859212 is an abundant number, since it is smaller than the sum of its proper divisors (169937588).

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

99859212 is a wasteful number, since it uses less digits than its factorization.

99859212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275 (or 2270 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 99859212 is about 9992.9581205967. The cubic root of 99859212 is about 463.9409543871.

The spelling of 99859212 in words is "ninety-nine million, eight hundred fifty-nine thousand, two hundred twelve".