394799087 has 2 divisors, whose sum is σ = 394799088. Its totient is φ = 394799086.

The previous prime is 394799057. The next prime is 394799089. The reversal of 394799087 is 780997493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394799087 - 2¹⁶ = 394733551 is a prime.

Together with 394799089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394799089) 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, 197399543 + 197399544.

It is an arithmetic number, because the mean of its divisors is an integer number (197399544).

Almost surely, 2^394799087 is an apocalyptic number.

394799087 is a deficient number, since it is larger than the sum of its proper divisors (1).

394799087 is an equidigital number, since it uses as much as digits as its factorization.

394799087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 394799087 is about 19869.5517563935. The cubic root of 394799087 is about 733.5989705474.

The spelling of 394799087 in words is "three hundred ninety-four million, seven hundred ninety-nine thousand, eighty-seven".