199417943 has 8 divisors (see below), whose sum is σ = 201367296. Its totient is φ = 197478400.

The previous prime is 199417937. The next prime is 199417951. The reversal of 199417943 is 349714991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199417943 - 2⁴ = 199417927 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 (199417903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42263 + ... + 46743.

It is an arithmetic number, because the mean of its divisors is an integer number (25170912).

Almost surely, 2^199417943 is an apocalyptic number.

199417943 is a deficient number, since it is larger than the sum of its proper divisors (1949353).

199417943 is a wasteful number, since it uses less digits than its factorization.

199417943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905.

The product of its digits is 244944, while the sum is 47.

The square root of 199417943 is about 14121.5418067575. The cubic root of 199417943 is about 584.2356814040.

The spelling of 199417943 in words is "one hundred ninety-nine million, four hundred seventeen thousand, nine hundred forty-three".