198300839 has 4 divisors (see below), whose sum is σ = 216328200. Its totient is φ = 180273480.

The previous prime is 198300833. The next prime is 198300841. The reversal of 198300839 is 938003891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938003891 = 11 ⋅85273081.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198300839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198300796 and 198300805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198300833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9013664 + ... + 9013685.

It is an arithmetic number, because the mean of its divisors is an integer number (54082050).

Almost surely, 2^198300839 is an apocalyptic number.

198300839 is a deficient number, since it is larger than the sum of its proper divisors (18027361).

198300839 is a wasteful number, since it uses less digits than its factorization.

198300839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18027360.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 198300839 is about 14081.9330704275. The cubic root of 198300839 is about 583.1427097051.

The spelling of 198300839 in words is "one hundred ninety-eight million, three hundred thousand, eight hundred thirty-nine".