198376999 has 2 divisors, whose sum is σ = 198377000. Its totient is φ = 198376998.

The previous prime is 198376987. The next prime is 198377027. The reversal of 198376999 is 999673891.

It is a weak prime.

It is an emirp because it is prime and its reverse (999673891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198376999 - 2⁹ = 198376487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198376949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99188499 + 99188500.

It is an arithmetic number, because the mean of its divisors is an integer number (99188500).

Almost surely, 2^198376999 is an apocalyptic number.

198376999 is a deficient number, since it is larger than the sum of its proper divisors (1).

198376999 is an equidigital number, since it uses as much as digits as its factorization.

198376999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6613488, while the sum is 61.

The square root of 198376999 is about 14084.6369850273. The cubic root of 198376999 is about 583.2173546478.

The spelling of 198376999 in words is "one hundred ninety-eight million, three hundred seventy-six thousand, nine hundred ninety-nine".