199394213 has 2 divisors, whose sum is σ = 199394214. Its totient is φ = 199394212.

The previous prime is 199394161. The next prime is 199394231. The reversal of 199394213 is 312493991.

199394213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (199394231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136936804 + 62457409 = 11702^2 + 7903^2 .

It is a cyclic number.

It is not a de Polignac number, because 199394213 - 2¹² = 199390117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199394233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99697106 + 99697107.

It is an arithmetic number, because the mean of its divisors is an integer number (99697107).

Almost surely, 2^199394213 is an apocalyptic number.

It is an amenable number.

199394213 is a deficient number, since it is larger than the sum of its proper divisors (1).

199394213 is an equidigital number, since it uses as much as digits as its factorization.

199394213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 41.

The square root of 199394213 is about 14120.7015760549. The cubic root of 199394213 is about 584.2125065207.

The spelling of 199394213 in words is "one hundred ninety-nine million, three hundred ninety-four thousand, two hundred thirteen".