399368027 has 2 divisors, whose sum is σ = 399368028. Its totient is φ = 399368026.

The previous prime is 399368023. The next prime is 399368033. The reversal of 399368027 is 720863993.

It is a weak prime.

It is an emirp because it is prime and its reverse (720863993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 399368027 - 2² = 399368023 is a prime.

It is not a weakly prime, because it can be changed into another prime (399368023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199684013 + 199684014.

It is an arithmetic number, because the mean of its divisors is an integer number (199684014).

Almost surely, 2^399368027 is an apocalyptic number.

399368027 is a deficient number, since it is larger than the sum of its proper divisors (1).

399368027 is an equidigital number, since it uses as much as digits as its factorization.

399368027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 399368027 is about 19984.1944295986. The cubic root of 399368027 is about 736.4180604526.

The spelling of 399368027 in words is "three hundred ninety-nine million, three hundred sixty-eight thousand, twenty-seven".