98788789 has 12 divisors (see below), whose sum is σ = 109226880.
Its totient is φ = 88609560.
The previous prime is 98788769. The next prime is 98788801.
98788789 is nontrivially palindromic in base 10.
It is not a de Polignac number, because 98788789 - 25 = 98788757 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 98788789.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (98788769) 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, 67932 + ... + 69370.
It is an arithmetic number, because the mean of its divisors is an integer number (9102240).
Almost surely, 298788789 is an apocalyptic number.
It is an amenable number.
98788789 is a deficient number, since it is larger than the sum of its proper divisors (10438091).
98788789 is a wasteful number, since it uses less digits than its factorization.
98788789 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1608 (or 1529 counting only the distinct ones).
The product of its digits is 16257024, while the sum is 64.
The square root of 98788789 is about 9939.2549519569.
The cubic root of 98788789 is about 462.2772849294.
It can be divided in two parts, 98 and 788789, that added together give a palindrome (788887).
The spelling of 98788789 in words is "ninety-eight million, seven hundred eighty-eight thousand, seven hundred eighty-nine".