198892999 has 2 divisors, whose sum is σ = 198893000. Its totient is φ = 198892998.

The previous prime is 198892949. The next prime is 198893011. The reversal of 198892999 is 999298891.

It is a strong prime.

It is an emirp because it is prime and its reverse (999298891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198892999 - 2⁹ = 198892487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198892999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198892909) 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, 99446499 + 99446500.

It is an arithmetic number, because the mean of its divisors is an integer number (99446500).

Almost surely, 2^198892999 is an apocalyptic number.

198892999 is a deficient number, since it is larger than the sum of its proper divisors (1).

198892999 is an equidigital number, since it uses as much as digits as its factorization.

198892999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 64.

The square root of 198892999 is about 14102.9429198306. The cubic root of 198892999 is about 583.7225872890.

The spelling of 198892999 in words is "one hundred ninety-eight million, eight hundred ninety-two thousand, nine hundred ninety-nine".