394481 has 2 divisors, whose sum is σ = 394482. Its totient is φ = 394480.

The previous prime is 394453. The next prime is 394489. The reversal of 394481 is 184493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336400 + 58081 = 580^2 + 241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394481 is a prime.

It is a super-2 number, since 2×394481² = 311230518722, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 394481.

It is not a weakly prime, because it can be changed into another prime (394489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197240 + 197241.

It is an arithmetic number, because the mean of its divisors is an integer number (197241).

2³⁹⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

394481 is a deficient number, since it is larger than the sum of its proper divisors (1).

394481 is an equidigital number, since it uses as much as digits as its factorization.

394481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 394481 is about 628.0772245512. The cubic root of 394481 is about 73.3401899007.

The spelling of 394481 in words is "three hundred ninety-four thousand, four hundred eighty-one".