394729 has 2 divisors, whose sum is σ = 394730. Its totient is φ = 394728.

The previous prime is 394727. The next prime is 394733. The reversal of 394729 is 927493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393129 + 1600 = 627^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 394729 - 2¹ = 394727 is a prime.

Together with 394727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 394694 and 394703.

It is not a weakly prime, because it can be changed into another prime (394721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197364 + 197365.

It is an arithmetic number, because the mean of its divisors is an integer number (197365).

2³⁹⁴⁷²⁹ is an apocalyptic number.

It is an amenable number.

394729 is a deficient number, since it is larger than the sum of its proper divisors (1).

394729 is an equidigital number, since it uses as much as digits as its factorization.

394729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 394729 is about 628.2746214833. The cubic root of 394729 is about 73.3555557078.

The spelling of 394729 in words is "three hundred ninety-four thousand, seven hundred twenty-nine".