199104247 has 4 divisors (see below), whose sum is σ = 200296656. Its totient is φ = 197911840.

The previous prime is 199104223. The next prime is 199104251. The reversal of 199104247 is 742401991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742401991 = 19 ⋅39073789.

It is a cyclic number.

It is not a de Polignac number, because 199104247 - 2¹⁹ = 198579959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199104277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595954 + ... + 596287.

It is an arithmetic number, because the mean of its divisors is an integer number (50074164).

Almost surely, 2^199104247 is an apocalyptic number.

199104247 is a deficient number, since it is larger than the sum of its proper divisors (1192409).

199104247 is a wasteful number, since it uses less digits than its factorization.

199104247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192408.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 199104247 is about 14110.4304328394. The cubic root of 199104247 is about 583.9291750837.

The spelling of 199104247 in words is "one hundred ninety-nine million, one hundred four thousand, two hundred forty-seven".