394891 has 6 divisors (see below), whose sum is σ = 459420. Its totient is φ = 338436.

The previous prime is 394879. The next prime is 394897. The reversal of 394891 is 198493.

It is not a de Polignac number, because 394891 - 2¹⁷ = 263819 is a prime.

It is a Duffinian number.

394891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (394897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3981 + ... + 4078.

It is an arithmetic number, because the mean of its divisors is an integer number (76570).

2³⁹⁴⁸⁹¹ is an apocalyptic number.

394891 is a deficient number, since it is larger than the sum of its proper divisors (64529).

394891 is an equidigital number, since it uses as much as digits as its factorization.

394891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8073 (or 8066 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 394891 is about 628.4035327717. The cubic root of 394891 is about 73.3655895747.

The spelling of 394891 in words is "three hundred ninety-four thousand, eight hundred ninety-one".