199241827 has 2 divisors, whose sum is σ = 199241828. Its totient is φ = 199241826.

The previous prime is 199241807. The next prime is 199241849. The reversal of 199241827 is 728142991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199241827 is a prime.

It is not a weakly prime, because it can be changed into another prime (199241807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99620913 + 99620914.

It is an arithmetic number, because the mean of its divisors is an integer number (99620914).

Almost surely, 2^199241827 is an apocalyptic number.

199241827 is a deficient number, since it is larger than the sum of its proper divisors (1).

199241827 is an equidigital number, since it uses as much as digits as its factorization.

199241827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 199241827 is about 14115.3047080111. The cubic root of 199241827 is about 584.0636414584.

The spelling of 199241827 in words is "one hundred ninety-nine million, two hundred forty-one thousand, eight hundred twenty-seven".