291198 has 8 divisors (see below), whose sum is σ = 582408. Its totient is φ = 97064.

The previous prime is 291191. The next prime is 291199. The reversal of 291198 is 891192.

It is a sphenic number, since it is the product of 3 distinct primes.

291198 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291198.

It is not an unprimeable number, because it can be changed into a prime (291191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24261 + ... + 24272.

It is an arithmetic number, because the mean of its divisors is an integer number (72801).

2²⁹¹¹⁹⁸ is an apocalyptic number.

291198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291198 is a wasteful number, since it uses less digits than its factorization.

291198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48538.

The product of its digits is 1296, while the sum is 30.

The square root of 291198 is about 539.6276494028. The cubic root of 291198 is about 66.2820801084.

The spelling of 291198 in words is "two hundred ninety-one thousand, one hundred ninety-eight".