399285067 has 2 divisors, whose sum is σ = 399285068. Its totient is φ = 399285066.

The previous prime is 399285059. The next prime is 399285091. The reversal of 399285067 is 760582993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399285067 - 2³ = 399285059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399285067.

It is not a weakly prime, because it can be changed into another prime (399285767) 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, 199642533 + 199642534.

It is an arithmetic number, because the mean of its divisors is an integer number (199642534).

Almost surely, 2^399285067 is an apocalyptic number.

399285067 is a deficient number, since it is larger than the sum of its proper divisors (1).

399285067 is an equidigital number, since it uses as much as digits as its factorization.

399285067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 399285067 is about 19982.1186814612. The cubic root of 399285067 is about 736.3670653228.

The spelling of 399285067 in words is "three hundred ninety-nine million, two hundred eighty-five thousand, sixty-seven".