199071077 has 2 divisors, whose sum is σ = 199071078. Its totient is φ = 199071076.

The previous prime is 199071011. The next prime is 199071143. The reversal of 199071077 is 770170991.

It is a balanced prime because it is at equal distance from previous prime (199071011) and next prime (199071143).

It can be written as a sum of positive squares in only one way, i.e., 127938721 + 71132356 = 11311^2 + 8434^2 .

It is an emirp because it is prime and its reverse (770170991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199071077 - 2¹² = 199066981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199070077) 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, 99535538 + 99535539.

It is an arithmetic number, because the mean of its divisors is an integer number (99535539).

Almost surely, 2^199071077 is an apocalyptic number.

It is an amenable number.

199071077 is a deficient number, since it is larger than the sum of its proper divisors (1).

199071077 is an equidigital number, since it uses as much as digits as its factorization.

199071077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 199071077 is about 14109.2550122251. The cubic root of 199071077 is about 583.8967464996.

The spelling of 199071077 in words is "one hundred ninety-nine million, seventy-one thousand, seventy-seven".