198908899 has 8 divisors (see below), whose sum is σ = 237208320. Its totient is φ = 163080456.

The previous prime is 198908893. The next prime is 198908903. The reversal of 198908899 is 998809891.

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

It is not a de Polignac number, because 198908899 - 2⁹ = 198908387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198908893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617569 + ... + 617890.

It is an arithmetic number, because the mean of its divisors is an integer number (29651040).

Almost surely, 2^198908899 is an apocalyptic number.

198908899 is a deficient number, since it is larger than the sum of its proper divisors (38299421).

198908899 is a wasteful number, since it uses less digits than its factorization.

198908899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235489.

The product of its (nonzero) digits is 3359232, while the sum is 61.

The square root of 198908899 is about 14103.5066206954. The cubic root of 198908899 is about 583.7381416186.

The spelling of 198908899 in words is "one hundred ninety-eight million, nine hundred eight thousand, eight hundred ninety-nine".