198930959 has 4 divisors (see below), whose sum is σ = 198977520. Its totient is φ = 198884400.

The previous prime is 198930917. The next prime is 198930961. The reversal of 198930959 is 959039891.

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 198930959 - 2²⁴ = 182153743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198930959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198930989) 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, 16142 + ... + 25659.

It is an arithmetic number, because the mean of its divisors is an integer number (49744380).

Almost surely, 2^198930959 is an apocalyptic number.

198930959 is a deficient number, since it is larger than the sum of its proper divisors (46561).

198930959 is an equidigital number, since it uses as much as digits as its factorization.

198930959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46560.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 198930959 is about 14104.2886740169. The cubic root of 198930959 is about 583.7597206555.

The spelling of 198930959 in words is "one hundred ninety-eight million, nine hundred thirty thousand, nine hundred fifty-nine".