99998784 has 84 divisors (see below), whose sum is σ = 289096704. Its totient is φ = 33046272.

The previous prime is 99998783. The next prime is 99998797. The reversal of 99998784 is 48789999.

Its product of digits (11757312) is a multiple of the sum of its prime factors (1512).

It is not an unprimeable number, because it can be changed into a prime (99998783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72469 + ... + 73835.

Almost surely, 2^99998784 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 99998784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144548352).

99998784 is an abundant number, since it is smaller than the sum of its proper divisors (189097920).

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

99998784 is a wasteful number, since it uses less digits than its factorization.

99998784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1499 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 99998784 is about 9999.9391998152. The cubic root of 99998784 is about 464.1570019630.

The spelling of 99998784 in words is "ninety-nine million, nine hundred ninety-eight thousand, seven hundred eighty-four".