199670043 has 8 divisors (see below), whose sum is σ = 267821568. Its totient is φ = 132315944.

The previous prime is 199669999. The next prime is 199670047. The reversal of 199670043 is 340076991.

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 199670043 - 2⁶ = 199669979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199669983 and 199670010.

It is not an unprimeable number, because it can be changed into a prime (199670047) 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 in 7 ways as a sum of consecutive naturals, for example, 198771 + ... + 199772.

It is an arithmetic number, because the mean of its divisors is an integer number (33477696).

Almost surely, 2^199670043 is an apocalyptic number.

199670043 is a deficient number, since it is larger than the sum of its proper divisors (68151525).

199670043 is a wasteful number, since it uses less digits than its factorization.

199670043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398713.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 199670043 is about 14130.4650666565. The cubic root of 199670043 is about 584.4817705830.

The spelling of 199670043 in words is "one hundred ninety-nine million, six hundred seventy thousand, forty-three".