99789000 has 256 divisors, whose sum is σ = 341452800. Its totient is φ = 24192000.

The previous prime is 99788989. The next prime is 99789017. The reversal of 99789000 is 98799.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2696982 + ... + 2697018.

It is an arithmetic number, because the mean of its divisors is an integer number (1333800).

Almost surely, 2^99789000 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 99789000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170726400).

99789000 is an abundant number, since it is smaller than the sum of its proper divisors (241663800).

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

99789000 is a wasteful number, since it uses less digits than its factorization.

99789000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 99789000 is about 9989.4444289960. Note that the first 4 decimals coincide. The cubic root of 99789000 is about 463.8321950680.

The spelling of 99789000 in words is "ninety-nine million, seven hundred eighty-nine thousand".