394228110120979 has 2 divisors, whose sum is σ = 394228110120980. Its totient is φ = 394228110120978.

The previous prime is 394228110120937. The next prime is 394228110120989. The reversal of 394228110120979 is 979021011822493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394228110120979 - 2¹⁹ = 394228109596691 is a prime.

It is not a weakly prime, because it can be changed into another prime (394228110120989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197114055060489 + 197114055060490.

It is an arithmetic number, because the mean of its divisors is an integer number (197114055060490).

Almost surely, 2^{394228110120979} is an apocalyptic number.

394228110120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

394228110120979 is an equidigital number, since it uses as much as digits as its factorization.

394228110120979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 394228110120979 in words is "three hundred ninety-four trillion, two hundred twenty-eight billion, one hundred ten million, one hundred twenty thousand, nine hundred seventy-nine".