394576229 has 2 divisors, whose sum is σ = 394576230. Its totient is φ = 394576228.

The previous prime is 394576223. The next prime is 394576253. The reversal of 394576229 is 922675493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387696100 + 6880129 = 19690^2 + 2623^2 .

It is a cyclic number.

It is not a de Polignac number, because 394576229 - 2²⁴ = 377799013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394576223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197288114 + 197288115.

It is an arithmetic number, because the mean of its divisors is an integer number (197288115).

Almost surely, 2^394576229 is an apocalyptic number.

It is an amenable number.

394576229 is a deficient number, since it is larger than the sum of its proper divisors (1).

394576229 is an equidigital number, since it uses as much as digits as its factorization.

394576229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The square root of 394576229 is about 19863.9429368894. The cubic root of 394576229 is about 733.4609094621.

The spelling of 394576229 in words is "three hundred ninety-four million, five hundred seventy-six thousand, two hundred twenty-nine".