198715229 has 2 divisors, whose sum is σ = 198715230. Its totient is φ = 198715228.

The previous prime is 198715211. The next prime is 198715289. The reversal of 198715229 is 922517891.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158709604 + 40005625 = 12598^2 + 6325^2 .

It is a cyclic number.

It is not a de Polignac number, because 198715229 - 2²⁴ = 181938013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198715229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198715289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99357614 + 99357615.

It is an arithmetic number, because the mean of its divisors is an integer number (99357615).

Almost surely, 2^198715229 is an apocalyptic number.

It is an amenable number.

198715229 is a deficient number, since it is larger than the sum of its proper divisors (1).

198715229 is an equidigital number, since it uses as much as digits as its factorization.

198715229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 44.

The square root of 198715229 is about 14096.6389256447. The cubic root of 198715229 is about 583.5486255839.

The spelling of 198715229 in words is "one hundred ninety-eight million, seven hundred fifteen thousand, two hundred twenty-nine".