199393943 has 8 divisors (see below), whose sum is σ = 231280512. Its totient is φ = 168357816.

The previous prime is 199393919. The next prime is 199393949. The reversal of 199393943 is 349393991.

It is a happy number.

199393943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 199393943 - 2¹⁴ = 199377559 is a prime.

It is a super-3 number, since 3×199393943³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199393891 and 199393900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199393949) 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, 212105 + ... + 213042.

It is an arithmetic number, because the mean of its divisors is an integer number (28910064).

Almost surely, 2^199393943 is an apocalyptic number.

199393943 is a deficient number, since it is larger than the sum of its proper divisors (31886569).

199393943 is an equidigital number, since it uses as much as digits as its factorization.

199393943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425221.

The product of its digits is 708588, while the sum is 50.

The square root of 199393943 is about 14120.6920156202. The cubic root of 199393943 is about 584.2122428263.

The spelling of 199393943 in words is "one hundred ninety-nine million, three hundred ninety-three thousand, nine hundred forty-three".