394141603 has 2 divisors, whose sum is σ = 394141604. Its totient is φ = 394141602.

The previous prime is 394141597. The next prime is 394141613. The reversal of 394141603 is 306141493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394141603 - 2⁵ = 394141571 is a prime.

It is not a weakly prime, because it can be changed into another prime (394141613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197070801 + 197070802.

It is an arithmetic number, because the mean of its divisors is an integer number (197070802).

Almost surely, 2^394141603 is an apocalyptic number.

394141603 is a deficient number, since it is larger than the sum of its proper divisors (1).

394141603 is an equidigital number, since it uses as much as digits as its factorization.

394141603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 394141603 is about 19852.9998488893. Note that the first 3 decimals coincide. The cubic root of 394141603 is about 733.1915079495.

The spelling of 394141603 in words is "three hundred ninety-four million, one hundred forty-one thousand, six hundred three".