394144027 has 2 divisors, whose sum is σ = 394144028. Its totient is φ = 394144026.

The previous prime is 394144001. The next prime is 394144081. The reversal of 394144027 is 720441493.

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-394144027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394143983 and 394144001.

It is not a weakly prime, because it can be changed into another prime (394144087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197072013 + 197072014.

It is an arithmetic number, because the mean of its divisors is an integer number (197072014).

Almost surely, 2^394144027 is an apocalyptic number.

394144027 is a deficient number, since it is larger than the sum of its proper divisors (1).

394144027 is an equidigital number, since it uses as much as digits as its factorization.

394144027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 394144027 is about 19853.0608975039. The cubic root of 394144027 is about 733.1930110071.

The spelling of 394144027 in words is "three hundred ninety-four million, one hundred forty-four thousand, twenty-seven".