394660033 has 2 divisors, whose sum is σ = 394660034. Its totient is φ = 394660032.

The previous prime is 394660009. The next prime is 394660061. The reversal of 394660033 is 330066493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234181809 + 160478224 = 15303^2 + 12668^2 .

It is an emirp because it is prime and its reverse (330066493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394660033 - 2²⁵ = 361105601 is a prime.

It is a super-2 number, since 2×394660033² = 311513083295122178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (394660003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197330016 + 197330017.

It is an arithmetic number, because the mean of its divisors is an integer number (197330017).

Almost surely, 2^394660033 is an apocalyptic number.

It is an amenable number.

394660033 is a deficient number, since it is larger than the sum of its proper divisors (1).

394660033 is an equidigital number, since it uses as much as digits as its factorization.

394660033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 394660033 is about 19866.0522751754. The cubic root of 394660033 is about 733.5128323458.

The spelling of 394660033 in words is "three hundred ninety-four million, six hundred sixty thousand, thirty-three".