199741967 has 2 divisors, whose sum is σ = 199741968. Its totient is φ = 199741966.

The previous prime is 199741951. The next prime is 199741979. The reversal of 199741967 is 769147991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199741967 - 2⁴ = 199741951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199741987) 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 as a sum of consecutive naturals, namely, 99870983 + 99870984.

It is an arithmetic number, because the mean of its divisors is an integer number (99870984).

Almost surely, 2^199741967 is an apocalyptic number.

199741967 is a deficient number, since it is larger than the sum of its proper divisors (1).

199741967 is an equidigital number, since it uses as much as digits as its factorization.

199741967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 53.

The square root of 199741967 is about 14133.0098351342. The cubic root of 199741967 is about 584.5519417175.

The spelling of 199741967 in words is "one hundred ninety-nine million, seven hundred forty-one thousand, nine hundred sixty-seven".