199058789 has 2 divisors, whose sum is σ = 199058790. Its totient is φ = 199058788.

The previous prime is 199058773. The next prime is 199058791. The reversal of 199058789 is 987850991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153388225 + 45670564 = 12385^2 + 6758^2 .

It is a cyclic number.

It is not a de Polignac number, because 199058789 - 2⁴ = 199058773 is a prime.

Together with 199058791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199051789) 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 as a sum of consecutive naturals, namely, 99529394 + 99529395.

It is an arithmetic number, because the mean of its divisors is an integer number (99529395).

Almost surely, 2^199058789 is an apocalyptic number.

It is an amenable number.

199058789 is a deficient number, since it is larger than the sum of its proper divisors (1).

199058789 is an equidigital number, since it uses as much as digits as its factorization.

199058789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 199058789 is about 14108.8195466524. The cubic root of 199058789 is about 583.8847322466.

The spelling of 199058789 in words is "one hundred ninety-nine million, fifty-eight thousand, seven hundred eighty-nine".