394811 has 2 divisors, whose sum is σ = 394812. Its totient is φ = 394810.

The previous prime is 394787. The next prime is 394813. The reversal of 394811 is 118493.

It is a strong prime.

It is an emirp because it is prime and its reverse (118493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394811 - 2⁶ = 394747 is a prime.

It is a Sophie Germain prime.

Together with 394813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (394813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197405 + 197406.

It is an arithmetic number, because the mean of its divisors is an integer number (197406).

2³⁹⁴⁸¹¹ is an apocalyptic number.

394811 is a deficient number, since it is larger than the sum of its proper divisors (1).

394811 is an equidigital number, since it uses as much as digits as its factorization.

394811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 394811 is about 628.3398761817. The cubic root of 394811 is about 73.3606349217.

The spelling of 394811 in words is "three hundred ninety-four thousand, eight hundred eleven".