199426027 has 2 divisors, whose sum is σ = 199426028. Its totient is φ = 199426026.

The previous prime is 199425979. The next prime is 199426037. The reversal of 199426027 is 720624991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199426027 - 2⁷ = 199425899 is a prime.

It is not a weakly prime, because it can be changed into another prime (199426037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99713013 + 99713014.

It is an arithmetic number, because the mean of its divisors is an integer number (99713014).

Almost surely, 2^199426027 is an apocalyptic number.

199426027 is a deficient number, since it is larger than the sum of its proper divisors (1).

199426027 is an equidigital number, since it uses as much as digits as its factorization.

199426027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 199426027 is about 14121.8280332257. The cubic root of 199426027 is about 584.2435758749.

The spelling of 199426027 in words is "one hundred ninety-nine million, four hundred twenty-six thousand, twenty-seven".