99860000 has 60 divisors (see below), whose sum is σ = 245719782. Its totient is φ = 39936000.

The previous prime is 99859999. The next prime is 99860017. The reversal of 99860000 is 6899.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 99856 + 99760144 = 316^2 + 9988^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17504 + ... + 22496.

Almost surely, 2^99860000 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 99860000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122859891).

99860000 is an abundant number, since it is smaller than the sum of its proper divisors (145859782).

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

99860000 is an equidigital number, since it uses as much as digits as its factorization.

99860000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 99860000 is about 9992.9975482835. The cubic root of 99860000 is about 463.9421747202.

Adding to 99860000 its reverse (6899), we get a palindrome (99866899).

The spelling of 99860000 in words is "ninety-nine million, eight hundred sixty thousand".