198059999 has 2 divisors, whose sum is σ = 198060000. Its totient is φ = 198059998.

The previous prime is 198059963. The next prime is 198060007. The reversal of 198059999 is 999950891.

It is a strong prime.

It is an emirp because it is prime and its reverse (999950891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198059999 - 2¹² = 198055903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198059699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99029999 + 99030000.

It is an arithmetic number, because the mean of its divisors is an integer number (99030000).

Almost surely, 2^198059999 is an apocalyptic number.

198059999 is a deficient number, since it is larger than the sum of its proper divisors (1).

198059999 is an equidigital number, since it uses as much as digits as its factorization.

198059999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2361960, while the sum is 59.

The square root of 198059999 is about 14073.3790896145. The cubic root of 198059999 is about 582.9065349002.

The spelling of 198059999 in words is "one hundred ninety-eight million, fifty-nine thousand, nine hundred ninety-nine".