199132709 has 2 divisors, whose sum is σ = 199132710. Its totient is φ = 199132708.

The previous prime is 199132691. The next prime is 199132721. The reversal of 199132709 is 907231991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191961025 + 7171684 = 13855^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 199132709 - 2²⁴ = 182355493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199132789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99566354 + 99566355.

It is an arithmetic number, because the mean of its divisors is an integer number (99566355).

Almost surely, 2^199132709 is an apocalyptic number.

It is an amenable number.

199132709 is a deficient number, since it is larger than the sum of its proper divisors (1).

199132709 is an equidigital number, since it uses as much as digits as its factorization.

199132709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 199132709 is about 14111.4389415112. The cubic root of 199132709 is about 583.9569980300.

It can be divided in two parts, 19913 and 2709, that added together give a palindrome (22622).

The spelling of 199132709 in words is "one hundred ninety-nine million, one hundred thirty-two thousand, seven hundred nine".