199830047 has 2 divisors, whose sum is σ = 199830048. Its totient is φ = 199830046.

The previous prime is 199829983. The next prime is 199830079. The reversal of 199830047 is 740038991.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (740038991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199830047 - 2⁶ = 199829983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199829986 and 199830013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199832047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99915023 + 99915024.

It is an arithmetic number, because the mean of its divisors is an integer number (99915024).

Almost surely, 2^199830047 is an apocalyptic number.

199830047 is a deficient number, since it is larger than the sum of its proper divisors (1).

199830047 is an equidigital number, since it uses as much as digits as its factorization.

199830047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 199830047 is about 14136.1256007436. The cubic root of 199830047 is about 584.6378521707.

The spelling of 199830047 in words is "one hundred ninety-nine million, eight hundred thirty thousand, forty-seven".