98998089989 has 4 divisors (see below), whose sum is σ = 102411817260. Its totient is φ = 95584362720.

The previous prime is 98998089979. The next prime is 98998090019.

98998089989 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82216960225 + 16781129764 = 286735^2 + 129542^2 .

It is a cyclic number.

It is not a de Polignac number, because 98998089989 - 2²⁰ = 98997041413 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 98998089989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98998089979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706863592 + ... + 1706863649.

It is an arithmetic number, because the mean of its divisors is an integer number (25602954315).

Almost surely, 2^98998089989 is an apocalyptic number.

It is an amenable number.

98998089989 is a deficient number, since it is larger than the sum of its proper divisors (3413727271).

98998089989 is a wasteful number, since it uses less digits than its factorization.

98998089989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413727270.

The product of its (nonzero) digits is 2176782336, while the sum is 86.

The spelling of 98998089989 in words is "ninety-eight billion, nine hundred ninety-eight million, eighty-nine thousand, nine hundred eighty-nine".