99500000 has 84 divisors (see below), whose sum is σ = 246090600. Its totient is φ = 39600000.

The previous prime is 99499991. The next prime is 99500021. The reversal of 99500000 is 599.

It is a nialpdrome in base 10.

It is a congruent number.

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 13 ways as a sum of consecutive naturals, for example, 499901 + ... + 500099.

It is an arithmetic number, because the mean of its divisors is an integer number (2929650).

Almost surely, 2^99500000 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 99500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123045300).

99500000 is an abundant number, since it is smaller than the sum of its proper divisors (146590600).

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

99500000 is an frugal number, since it uses more digits than its factorization.

99500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 99500000 is about 9974.9686716300. The cubic root of 99500000 is about 463.3839922987.

Adding to 99500000 its reverse (599), we get a palindrome (99500599).

The spelling of 99500000 in words is "ninety-nine million, five hundred thousand".