199735493 has 2 divisors, whose sum is σ = 199735494. Its totient is φ = 199735492.

The previous prime is 199735453. The next prime is 199735531. The reversal of 199735493 is 394537991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165431044 + 34304449 = 12862^2 + 5857^2 .

It is an emirp because it is prime and its reverse (394537991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199735493 - 2¹⁸ = 199473349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199735453) 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, 99867746 + 99867747.

It is an arithmetic number, because the mean of its divisors is an integer number (99867747).

Almost surely, 2^199735493 is an apocalyptic number.

It is an amenable number.

199735493 is a deficient number, since it is larger than the sum of its proper divisors (1).

199735493 is an equidigital number, since it uses as much as digits as its factorization.

199735493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 50.

The square root of 199735493 is about 14132.7807950170. The cubic root of 199735493 is about 584.5456261858.

The spelling of 199735493 in words is "one hundred ninety-nine million, seven hundred thirty-five thousand, four hundred ninety-three".