99789088 has 72 divisors (see below), whose sum is σ = 238557312. Its totient is φ = 40892544.

The previous prime is 99789077. The next prime is 99789103. The reversal of 99789088 is 88098799.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34681 + ... + 37447.

It is an arithmetic number, because the mean of its divisors is an integer number (3313296).

Almost surely, 2^99789088 is an apocalyptic number.

99789088 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99789088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119278656).

99789088 is an abundant number, since it is smaller than the sum of its proper divisors (138768224).

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

99789088 is a wasteful number, since it uses less digits than its factorization.

99789088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 58.

The square root of 99789088 is about 9989.4488336444. The cubic root of 99789088 is about 463.8323314131.

The spelling of 99789088 in words is "ninety-nine million, seven hundred eighty-nine thousand, eighty-eight".