99020800 has 78 divisors (see below), whose sum is σ = 245795528. Its totient is φ = 39567360.

The previous prime is 99020797. The next prime is 99020809. The reversal of 99020800 is 802099.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99020809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101917 + ... + 102883.

Almost surely, 2^99020800 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 99020800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122897764).

99020800 is an abundant number, since it is smaller than the sum of its proper divisors (146774728).

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

99020800 is an equidigital number, since it uses as much as digits as its factorization.

99020800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 99020800 is about 9950.9195554984. The cubic root of 99020800 is about 462.6388966806.

Adding to 99020800 its reverse (802099), we get a palindrome (99822899).

The spelling of 99020800 in words is "ninety-nine million, twenty thousand, eight hundred".