199428413 has 2 divisors, whose sum is σ = 199428414. Its totient is φ = 199428412.

The previous prime is 199428407. The next prime is 199428431. The reversal of 199428413 is 314824991.

Together with next prime (199428431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178970884 + 20457529 = 13378^2 + 4523^2 .

It is a cyclic number.

It is not a de Polignac number, because 199428413 - 2⁶ = 199428349 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199428403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99714206 + 99714207.

It is an arithmetic number, because the mean of its divisors is an integer number (99714207).

Almost surely, 2^199428413 is an apocalyptic number.

It is an amenable number.

199428413 is a deficient number, since it is larger than the sum of its proper divisors (1).

199428413 is an equidigital number, since it uses as much as digits as its factorization.

199428413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 199428413 is about 14121.9125121210. The cubic root of 199428413 is about 584.2459058944.

The spelling of 199428413 in words is "one hundred ninety-nine million, four hundred twenty-eight thousand, four hundred thirteen".