990000000098 has 8 divisors (see below), whose sum is σ = 1485106868700. Its totient is φ = 494964377200.

The previous prime is 990000000089. The next prime is 990000000137. The reversal of 990000000098 is 890000000099.

It can be written as a sum of positive squares in 2 ways, for example, as 956978932009 + 33021068089 = 978253^2 + 181717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 989999999995 and 990000000067.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17776673 + ... + 17832276.

Almost surely, 2^990000000098 is an apocalyptic number.

990000000098 is a deficient number, since it is larger than the sum of its proper divisors (495106868602).

990000000098 is a wasteful number, since it uses less digits than its factorization.

990000000098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35622852.

The product of its (nonzero) digits is 5832, while the sum is 35.

Subtracting from 990000000098 its reverse (890000000099), we obtain a palindrome (99999999999).

The spelling of 990000000098 in words is "nine hundred ninety billion, ninety-eight", and thus it is an aban number.