199429 has 2 divisors, whose sum is σ = 199430. Its totient is φ = 199428.

The previous prime is 199417. The next prime is 199447. The reversal of 199429 is 924991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168100 + 31329 = 410^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 199429 - 2¹¹ = 197381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199394 and 199403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99714 + 99715.

It is an arithmetic number, because the mean of its divisors is an integer number (99715).

2¹⁹⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

199429 is a deficient number, since it is larger than the sum of its proper divisors (1).

199429 is an equidigital number, since it uses as much as digits as its factorization.

199429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 34.

The square root of 199429 is about 446.5747417846. The cubic root of 199429 is about 58.4246479119.

The spelling of 199429 in words is "one hundred ninety-nine thousand, four hundred twenty-nine".