394507 has 2 divisors, whose sum is σ = 394508. Its totient is φ = 394506.

The previous prime is 394501. The next prime is 394523. The reversal of 394507 is 705493.

It is a weak prime.

It is an emirp because it is prime and its reverse (705493) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394507 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (394501) 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, 197253 + 197254.

It is an arithmetic number, because the mean of its divisors is an integer number (197254).

2³⁹⁴⁵⁰⁷ is an apocalyptic number.

394507 is a deficient number, since it is larger than the sum of its proper divisors (1).

394507 is an equidigital number, since it uses as much as digits as its factorization.

394507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 394507 is about 628.0979223019. The cubic root of 394507 is about 73.3418011342.

The spelling of 394507 in words is "three hundred ninety-four thousand, five hundred seven".