198430229 has 2 divisors, whose sum is σ = 198430230. Its totient is φ = 198430228.

The previous prime is 198430213. The next prime is 198430237. The reversal of 198430229 is 922034891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172318129 + 26112100 = 13127^2 + 5110^2 .

It is a cyclic number.

It is not a de Polignac number, because 198430229 - 2⁴ = 198430213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 198430192 and 198430201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198430289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99215114 + 99215115.

It is an arithmetic number, because the mean of its divisors is an integer number (99215115).

Almost surely, 2^198430229 is an apocalyptic number.

It is an amenable number.

198430229 is a deficient number, since it is larger than the sum of its proper divisors (1).

198430229 is an equidigital number, since it uses as much as digits as its factorization.

198430229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 198430229 is about 14086.5265058495. The cubic root of 198430229 is about 583.2695143969.

The spelling of 198430229 in words is "one hundred ninety-eight million, four hundred thirty thousand, two hundred twenty-nine".