199270679 has 2 divisors, whose sum is σ = 199270680. Its totient is φ = 199270678.

The previous prime is 199270637. The next prime is 199270681. The reversal of 199270679 is 976072991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199270679 - 2²⁰ = 198222103 is a prime.

Together with 199270681, 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 (199270699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99635339 + 99635340.

It is an arithmetic number, because the mean of its divisors is an integer number (99635340).

Almost surely, 2^199270679 is an apocalyptic number.

199270679 is a deficient number, since it is larger than the sum of its proper divisors (1).

199270679 is an equidigital number, since it uses as much as digits as its factorization.

199270679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 50.

The square root of 199270679 is about 14116.3266822499. The cubic root of 199270679 is about 584.0918326455.

The spelling of 199270679 in words is "one hundred ninety-nine million, two hundred seventy thousand, six hundred seventy-nine".