199674229 has 2 divisors, whose sum is σ = 199674230. Its totient is φ = 199674228.

The previous prime is 199674227. The next prime is 199674253. The reversal of 199674229 is 922476991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123810129 + 75864100 = 11127^2 + 8710^2 .

It is an emirp because it is prime and its reverse (922476991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199674229 - 2¹ = 199674227 is a prime.

Together with 199674227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199674221) 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 as a sum of consecutive naturals, namely, 99837114 + 99837115.

It is an arithmetic number, because the mean of its divisors is an integer number (99837115).

Almost surely, 2^199674229 is an apocalyptic number.

It is an amenable number.

199674229 is a deficient number, since it is larger than the sum of its proper divisors (1).

199674229 is an equidigital number, since it uses as much as digits as its factorization.

199674229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 199674229 is about 14130.6131855628. The cubic root of 199674229 is about 584.4858550275.

The spelling of 199674229 in words is "one hundred ninety-nine million, six hundred seventy-four thousand, two hundred twenty-nine".