394739 has 2 divisors, whose sum is σ = 394740. Its totient is φ = 394738.

The previous prime is 394733. The next prime is 394747. The reversal of 394739 is 937493.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394739 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 394699 and 394708.

It is not a weakly prime, because it can be changed into another prime (394733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197369 + 197370.

It is an arithmetic number, because the mean of its divisors is an integer number (197370).

2³⁹⁴⁷³⁹ is an apocalyptic number.

394739 is a deficient number, since it is larger than the sum of its proper divisors (1).

394739 is an equidigital number, since it uses as much as digits as its factorization.

394739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 35.

The square root of 394739 is about 628.2825797362. The cubic root of 394739 is about 73.3561751618.

The spelling of 394739 in words is "three hundred ninety-four thousand, seven hundred thirty-nine".