198424229 has 6 divisors (see below), whose sum is σ = 203933394. Its totient is φ = 193060080.

The previous prime is 198424207. The next prime is 198424249. The reversal of 198424229 is 922424891.

It can be written as a sum of positive squares in 3 ways, for example, as 67207204 + 131217025 = 8198^2 + 11455^2 .

It is not a de Polignac number, because 198424229 - 2¹² = 198420133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198424249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71102 + ... + 73839.

It is an arithmetic number, because the mean of its divisors is an integer number (33988899).

Almost surely, 2^198424229 is an apocalyptic number.

It is an amenable number.

198424229 is a deficient number, since it is larger than the sum of its proper divisors (5509165).

198424229 is an equidigital number, since it uses as much as digits as its factorization.

198424229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145015 (or 144978 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 198424229 is about 14086.3135347755. The cubic root of 198424229 is about 583.2636355004.

It can be divided in two parts, 19 and 8424229, that added together give a palindrome (8424248).

The spelling of 198424229 in words is "one hundred ninety-eight million, four hundred twenty-four thousand, two hundred twenty-nine".