198884249 has 4 divisors (see below), whose sum is σ = 202636836. Its totient is φ = 195131664.

The previous prime is 198884237. The next prime is 198884263. The reversal of 198884249 is 942488891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942488891 = 17 ⋅55440523.

It can be written as a sum of positive squares in 2 ways, for example, as 171426649 + 27457600 = 13093^2 + 5240^2 .

It is a cyclic number.

It is not a de Polignac number, because 198884249 - 2¹² = 198880153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 3752533 = 198884249 / (1 + 9 + 8 + 8 + 8 + 4 + 2 + 4 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198884249.

It is not an unprimeable number, because it can be changed into a prime (198884209) 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, 1876214 + ... + 1876319.

It is an arithmetic number, because the mean of its divisors is an integer number (50659209).

Almost surely, 2^198884249 is an apocalyptic number.

It is an amenable number.

198884249 is a deficient number, since it is larger than the sum of its proper divisors (3752587).

198884249 is an equidigital number, since it uses as much as digits as its factorization.

198884249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752586.

The product of its digits is 1327104, while the sum is 53.

The square root of 198884249 is about 14102.6326974789. The cubic root of 198884249 is about 583.7140271627.

It can be divided in two parts, 1988842 and 49, that added together give a palindrome (1988891).

The spelling of 198884249 in words is "one hundred ninety-eight million, eight hundred eighty-four thousand, two hundred forty-nine".