199967 has 2 divisors, whose sum is σ = 199968. Its totient is φ = 199966.

The previous prime is 199961. The next prime is 199999. The reversal of 199967 is 769991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199967 - 2¹⁰ = 198943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99983 + 99984.

It is an arithmetic number, because the mean of its divisors is an integer number (99984).

2¹⁹⁹⁹⁶⁷ is an apocalyptic number.

199967 is a deficient number, since it is larger than the sum of its proper divisors (1).

199967 is an equidigital number, since it uses as much as digits as its factorization.

199967 is an evil number, because the sum of its binary digits is even.

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

The square root of 199967 is about 447.1766988563. The cubic root of 199967 is about 58.4771381678.

The spelling of 199967 in words is "one hundred ninety-nine thousand, nine hundred sixty-seven".