99689800 has 96 divisors (see below), whose sum is σ = 273553920. Its totient is φ = 33062400.

The previous prime is 99689761. The next prime is 99689813. The reversal of 99689800 is 898699.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42252 + ... + 44548.

It is an arithmetic number, because the mean of its divisors is an integer number (2849520).

Almost surely, 2^99689800 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 99689800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136776960).

99689800 is an abundant number, since it is smaller than the sum of its proper divisors (173864120).

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

99689800 is a wasteful number, since it uses less digits than its factorization.

99689800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 99689800 is about 9984.4779533033. The cubic root of 99689800 is about 463.6784459606.

It can be divided in two parts, 99689 and 800, that added together give a square (100489 = 317²).

The spelling of 99689800 in words is "ninety-nine million, six hundred eighty-nine thousand, eight hundred".