394861163 has 2 divisors, whose sum is σ = 394861164. Its totient is φ = 394861162.

The previous prime is 394861153. The next prime is 394861169. The reversal of 394861163 is 361168493.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394861163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394861163.

It is not a weakly prime, because it can be changed into another prime (394861169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197430581 + 197430582.

It is an arithmetic number, because the mean of its divisors is an integer number (197430582).

Almost surely, 2^394861163 is an apocalyptic number.

394861163 is a deficient number, since it is larger than the sum of its proper divisors (1).

394861163 is an equidigital number, since it uses as much as digits as its factorization.

394861163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 394861163 is about 19871.1137835804. The cubic root of 394861163 is about 733.6374175319.

The spelling of 394861163 in words is "three hundred ninety-four million, eight hundred sixty-one thousand, one hundred sixty-three".