198968099 has 6 divisors (see below), whose sum is σ = 217107156. Its totient is φ = 180837560.

The previous prime is 198968089. The next prime is 198968111. The reversal of 198968099 is 990869891.

It is a de Polignac number, because none of the positive numbers 2^k-198968099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198968089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44657 + ... + 48909.

It is an arithmetic number, because the mean of its divisors is an integer number (36184526).

Almost surely, 2^198968099 is an apocalyptic number.

198968099 is a deficient number, since it is larger than the sum of its proper divisors (18139057).

198968099 is an frugal number, since it uses more digits than its factorization.

198968099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517 (or 4264 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 59.

The square root of 198968099 is about 14105.6052333815. The cubic root of 198968099 is about 583.7960473071.

The spelling of 198968099 in words is "one hundred ninety-eight million, nine hundred sixty-eight thousand, ninety-nine".