199967135 has 4 divisors (see below), whose sum is σ = 239960568. Its totient is φ = 159973704.

The previous prime is 199967123. The next prime is 199967137. The reversal of 199967135 is 531769991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531769991 = 107 ⋅4969813.

It is a cyclic number.

It is not a de Polignac number, because 199967135 - 2¹² = 199963039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199967137) 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 in 3 ways as a sum of consecutive naturals, for example, 19996709 + ... + 19996718.

It is an arithmetic number, because the mean of its divisors is an integer number (59990142).

Almost surely, 2^199967135 is an apocalyptic number.

199967135 is a deficient number, since it is larger than the sum of its proper divisors (39993433).

199967135 is an equidigital number, since it uses as much as digits as its factorization.

199967135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39993432.

The product of its digits is 459270, while the sum is 50.

The square root of 199967135 is about 14140.9736227744. The cubic root of 199967135 is about 584.7715132735.

The spelling of 199967135 in words is "one hundred ninety-nine million, nine hundred sixty-seven thousand, one hundred thirty-five".