394019 has 2 divisors, whose sum is σ = 394020. Its totient is φ = 394018.

The previous prime is 394007. The next prime is 394039. The reversal of 394019 is 910493.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394019 - 2¹² = 389923 is a prime.

It is a super-2 number, since 2×394019² = 310501944722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (394039) 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, 197009 + 197010.

It is an arithmetic number, because the mean of its divisors is an integer number (197010).

2³⁹⁴⁰¹⁹ is an apocalyptic number.

394019 is a deficient number, since it is larger than the sum of its proper divisors (1).

394019 is an equidigital number, since it uses as much as digits as its factorization.

394019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 394019 is about 627.7093276350. The cubic root of 394019 is about 73.3115477068.

The spelling of 394019 in words is "three hundred ninety-four thousand, nineteen".