199608427 has 2 divisors, whose sum is σ = 199608428. Its totient is φ = 199608426.

The previous prime is 199608413. The next prime is 199608463. The reversal of 199608427 is 724806991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199608427 is a prime.

It is not a weakly prime, because it can be changed into another prime (199608727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99804213 + 99804214.

It is an arithmetic number, because the mean of its divisors is an integer number (99804214).

Almost surely, 2^199608427 is an apocalyptic number.

199608427 is a deficient number, since it is larger than the sum of its proper divisors (1).

199608427 is an equidigital number, since it uses as much as digits as its factorization.

199608427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 199608427 is about 14128.2846446410. The cubic root of 199608427 is about 584.4216428287.

The spelling of 199608427 in words is "one hundred ninety-nine million, six hundred eight thousand, four hundred twenty-seven".