199768967 has 2 divisors, whose sum is σ = 199768968. Its totient is φ = 199768966.

The previous prime is 199768963. The next prime is 199768969. The reversal of 199768967 is 769867991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199768967 - 2² = 199768963 is a prime.

Together with 199768969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199768963) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99884483 + 99884484.

It is an arithmetic number, because the mean of its divisors is an integer number (99884484).

Almost surely, 2^199768967 is an apocalyptic number.

199768967 is a deficient number, since it is larger than the sum of its proper divisors (1).

199768967 is an equidigital number, since it uses as much as digits as its factorization.

199768967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 62.

The square root of 199768967 is about 14133.9650133995. The cubic root of 199768967 is about 584.5782793496.

The spelling of 199768967 in words is "one hundred ninety-nine million, seven hundred sixty-eight thousand, nine hundred sixty-seven".