198805339 has 4 divisors (see below), whose sum is σ = 198881856. Its totient is φ = 198728824.

The previous prime is 198805333. The next prime is 198805349. The reversal of 198805339 is 933508891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198805339 - 2³ = 198805331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198805331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34219 + ... + 39604.

It is an arithmetic number, because the mean of its divisors is an integer number (49720464).

Almost surely, 2^198805339 is an apocalyptic number.

198805339 is a deficient number, since it is larger than the sum of its proper divisors (76517).

198805339 is an equidigital number, since it uses as much as digits as its factorization.

198805339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76516.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 198805339 is about 14099.8347153433. The cubic root of 198805339 is about 583.6368181543.

The spelling of 198805339 in words is "one hundred ninety-eight million, eight hundred five thousand, three hundred thirty-nine".