394129 has 2 divisors, whose sum is σ = 394130. Its totient is φ = 394128.

The previous prime is 394123. The next prime is 394153. The reversal of 394129 is 921493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330625 + 63504 = 575^2 + 252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394097 and 394106.

It is not a weakly prime, because it can be changed into another prime (394123) 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, 197064 + 197065.

It is an arithmetic number, because the mean of its divisors is an integer number (197065).

2³⁹⁴¹²⁹ is an apocalyptic number.

It is an amenable number.

394129 is a deficient number, since it is larger than the sum of its proper divisors (1).

394129 is an equidigital number, since it uses as much as digits as its factorization.

394129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 394129 is about 627.7969416937. The cubic root of 394129 is about 73.3183693067.

The spelling of 394129 in words is "three hundred ninety-four thousand, one hundred twenty-nine".