199475693 has 2 divisors, whose sum is σ = 199475694. Its totient is φ = 199475692.

The previous prime is 199475677. The next prime is 199475719. The reversal of 199475693 is 396574991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118439689 + 81036004 = 10883^2 + 9002^2 .

It is a cyclic number.

It is not a de Polignac number, because 199475693 - 2⁴ = 199475677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199475593) 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, 99737846 + 99737847.

It is an arithmetic number, because the mean of its divisors is an integer number (99737847).

Almost surely, 2^199475693 is an apocalyptic number.

It is an amenable number.

199475693 is a deficient number, since it is larger than the sum of its proper divisors (1).

199475693 is an equidigital number, since it uses as much as digits as its factorization.

199475693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 199475693 is about 14123.5864071418. The cubic root of 199475693 is about 584.2920727760.

The spelling of 199475693 in words is "one hundred ninety-nine million, four hundred seventy-five thousand, six hundred ninety-three".