198299867 has 4 divisors (see below), whose sum is σ = 198330360. Its totient is φ = 198269376.

The previous prime is 198299863. The next prime is 198299869. The reversal of 198299867 is 768992891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768992891 = 101 ⋅7613791.

It is a cyclic number.

It is not a de Polignac number, because 198299867 - 2² = 198299863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198299863) 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, 1142 + ... + 19947.

It is an arithmetic number, because the mean of its divisors is an integer number (49582590).

Almost surely, 2^198299867 is an apocalyptic number.

198299867 is a deficient number, since it is larger than the sum of its proper divisors (30493).

198299867 is an equidigital number, since it uses as much as digits as its factorization.

198299867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30492.

The product of its digits is 3919104, while the sum is 59.

The square root of 198299867 is about 14081.8985580780. The cubic root of 198299867 is about 583.1417569177.

The spelling of 198299867 in words is "one hundred ninety-eight million, two hundred ninety-nine thousand, eight hundred sixty-seven".