394897 has 2 divisors, whose sum is σ = 394898. Its totient is φ = 394896.

The previous prime is 394879. The next prime is 394931. The reversal of 394897 is 798493.

Together with previous prime (394879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221841 + 173056 = 471^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 394897 - 2¹¹ = 392849 is a prime.

It is not a weakly prime, because it can be changed into another prime (394817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197448 + 197449.

It is an arithmetic number, because the mean of its divisors is an integer number (197449).

2³⁹⁴⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

394897 is a deficient number, since it is larger than the sum of its proper divisors (1).

394897 is an equidigital number, since it uses as much as digits as its factorization.

394897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 394897 is about 628.4083067560. The cubic root of 394897 is about 73.3659611467.

The spelling of 394897 in words is "three hundred ninety-four thousand, eight hundred ninety-seven".