9800999998 has 8 divisors (see below), whose sum is σ = 14702486400. Its totient is φ = 4900171200.

The previous prime is 9800999981. The next prime is 9801000023. The reversal of 9800999998 is 8999990089.

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

It is a congruent number.

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, 125278 + ... + 187873.

It is an arithmetic number, because the mean of its divisors is an integer number (1837810800).

Almost surely, 2^9800999998 is an apocalyptic number.

9800999998 is a deficient number, since it is larger than the sum of its proper divisors (4901486402).

9800999998 is a wasteful number, since it uses less digits than its factorization.

9800999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328802.

The product of its (nonzero) digits is 34012224, while the sum is 70.

The square root of 9800999998 is about 98999.9999898990. Note that the first 4 decimals coincide. The cubic root of 9800999998 is about 2140.0477467729.

The spelling of 9800999998 in words is "nine billion, eight hundred million, nine hundred ninety-nine thousand, nine hundred ninety-eight".