394228110120937 has 2 divisors, whose sum is σ = 394228110120938. Its totient is φ = 394228110120936.

The previous prime is 394228110120913. The next prime is 394228110120979. The reversal of 394228110120937 is 739021011822493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266742422727001 + 127485687393936 = 16332251^2 + 11290956^2 .

It is an emirp because it is prime and its reverse (739021011822493) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394228110120937 is a prime.

It is not a weakly prime, because it can be changed into another prime (394228110123937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197114055060468 + 197114055060469.

It is an arithmetic number, because the mean of its divisors is an integer number (197114055060469).

Almost surely, 2^{394228110120937} is an apocalyptic number.

It is an amenable number.

394228110120937 is a deficient number, since it is larger than the sum of its proper divisors (1).

394228110120937 is an equidigital number, since it uses as much as digits as its factorization.

394228110120937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 394228110120937 in words is "three hundred ninety-four trillion, two hundred twenty-eight billion, one hundred ten million, one hundred twenty thousand, nine hundred thirty-seven".