199030589 has 2 divisors, whose sum is σ = 199030590. Its totient is φ = 199030588.

The previous prime is 199030583. The next prime is 199030591. The reversal of 199030589 is 985030991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164608900 + 34421689 = 12830^2 + 5867^2 .

It is a cyclic number.

It is not a de Polignac number, because 199030589 - 2¹² = 199026493 is a prime.

It is a super-2 number, since 2×199030589² = 79226350715373842, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 199030591, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199030583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99515294 + 99515295.

It is an arithmetic number, because the mean of its divisors is an integer number (99515295).

Almost surely, 2^199030589 is an apocalyptic number.

It is an amenable number.

199030589 is a deficient number, since it is larger than the sum of its proper divisors (1).

199030589 is an equidigital number, since it uses as much as digits as its factorization.

199030589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 199030589 is about 14107.8201363641. The cubic root of 199030589 is about 583.8571586051.

The spelling of 199030589 in words is "one hundred ninety-nine million, thirty thousand, five hundred eighty-nine".