198884967 has 4 divisors (see below), whose sum is σ = 265179960. Its totient is φ = 132589976.

The previous prime is 198884963. The next prime is 198885041. The reversal of 198884967 is 769488891.

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 198884967 - 2² = 198884963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198884967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198884963) 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 in 3 ways as a sum of consecutive naturals, for example, 33147492 + ... + 33147497.

It is an arithmetic number, because the mean of its divisors is an integer number (66294990).

Almost surely, 2^198884967 is an apocalyptic number.

198884967 is a deficient number, since it is larger than the sum of its proper divisors (66294993).

198884967 is an equidigital number, since it uses as much as digits as its factorization.

198884967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66294992.

The product of its digits is 6967296, while the sum is 60.

The square root of 198884967 is about 14102.6581536957. The cubic root of 198884967 is about 583.7147295917.

The spelling of 198884967 in words is "one hundred ninety-eight million, eight hundred eighty-four thousand, nine hundred sixty-seven".