99010000 has 50 divisors (see below), whose sum is σ = 239737322. Its totient is φ = 39600000.

The previous prime is 99009991. The next prime is 99010019. The reversal of 99010000 is 1099.

It can be written as a sum of positive squares in 5 ways, for example, as 13927824 + 85082176 = 3732^2 + 9224^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 99010000.

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, 5050 + ... + 14950.

Almost surely, 2^99010000 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 99010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119868661).

99010000 is an abundant number, since it is smaller than the sum of its proper divisors (140727322).

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

99010000 is an equidigital number, since it uses as much as digits as its factorization.

99010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9929 (or 9908 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 99010000 is about 9950.3768772846. The cubic root of 99010000 is about 462.6220763703.

Adding to 99010000 its reverse (1099), we get a palindrome (99011099).

The spelling of 99010000 in words is "ninety-nine million, ten thousand".