199273967 has 2 divisors, whose sum is σ = 199273968. Its totient is φ = 199273966.

The previous prime is 199273951. The next prime is 199273969. The reversal of 199273967 is 769372991.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (769372991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199273967 - 2⁴ = 199273951 is a prime.

It is a super-2 number, since 2×199273967² = 79420227847834178, which contains 22 as substring.

Together with 199273969, 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 (199273969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99636983 + 99636984.

It is an arithmetic number, because the mean of its divisors is an integer number (99636984).

Almost surely, 2^199273967 is an apocalyptic number.

199273967 is a deficient number, since it is larger than the sum of its proper divisors (1).

199273967 is an equidigital number, since it uses as much as digits as its factorization.

199273967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 53.

The square root of 199273967 is about 14116.4431426617. The cubic root of 199273967 is about 584.0950451659.

The spelling of 199273967 in words is "one hundred ninety-nine million, two hundred seventy-three thousand, nine hundred sixty-seven".