98128799 has 4 divisors (see below), whose sum is σ = 98148864. Its totient is φ = 98108736.

The previous prime is 98128781. The next prime is 98128801. The reversal of 98128799 is 99782189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99782189 = 13 ⋅7675553.

It is a cyclic number.

It is not a de Polignac number, because 98128799 - 2²⁰ = 97080223 is a prime.

It is a super-2 number, since 2×98128799² = 19258522386364802, which contains 22 as substring.

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 98128799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98128729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (24537216).

Almost surely, 2^98128799 is an apocalyptic number.

98128799 is a deficient number, since it is larger than the sum of its proper divisors (20065).

98128799 is a wasteful number, since it uses less digits than its factorization.

98128799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20064.

The product of its digits is 653184, while the sum is 53.

The square root of 98128799 is about 9905.9981324448. The cubic root of 98128799 is about 461.2455202352.

The spelling of 98128799 in words is "ninety-eight million, one hundred twenty-eight thousand, seven hundred ninety-nine".