199932539 has 2 divisors, whose sum is σ = 199932540. Its totient is φ = 199932538.

The previous prime is 199932463. The next prime is 199932553. The reversal of 199932539 is 935239991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199932539 - 2⁸ = 199932283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199932559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99966269 + 99966270.

It is an arithmetic number, because the mean of its divisors is an integer number (99966270).

Almost surely, 2^199932539 is an apocalyptic number.

199932539 is a deficient number, since it is larger than the sum of its proper divisors (1).

199932539 is an equidigital number, since it uses as much as digits as its factorization.

199932539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 590490, while the sum is 50.

The square root of 199932539 is about 14139.7503160417. The cubic root of 199932539 is about 584.7377878614.

The spelling of 199932539 in words is "one hundred ninety-nine million, nine hundred thirty-two thousand, five hundred thirty-nine".