198809406299 has 8 divisors (see below), whose sum is σ = 227213495520. Its totient is φ = 170406003456.

The previous prime is 198809406283. The next prime is 198809406353. The reversal of 198809406299 is 992604908891.

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

It is a cyclic number.

It is not a de Polignac number, because 198809406299 - 2⁴ = 198809406283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198809406239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873227 + ... + 1077099.

It is an arithmetic number, because the mean of its divisors is an integer number (28401686940).

Almost surely, 2^198809406299 is an apocalyptic number.

198809406299 is a deficient number, since it is larger than the sum of its proper divisors (28404089221).

198809406299 is a wasteful number, since it uses less digits than its factorization.

198809406299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343189.

The product of its (nonzero) digits is 20155392, while the sum is 65.

The spelling of 198809406299 in words is "one hundred ninety-eight billion, eight hundred nine million, four hundred six thousand, two hundred ninety-nine".