394287050089 has 2 divisors, whose sum is σ = 394287050090. Its totient is φ = 394287050088.

The previous prime is 394287050051. The next prime is 394287050141. The reversal of 394287050089 is 980050782493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375778808064 + 18508242025 = 613008^2 + 136045^2 .

It is a cyclic number.

It is not a de Polignac number, because 394287050089 - 2¹¹ = 394287048041 is a prime.

It is not a weakly prime, because it can be changed into another prime (394287053089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197143525044 + 197143525045.

It is an arithmetic number, because the mean of its divisors is an integer number (197143525045).

Almost surely, 2^394287050089 is an apocalyptic number.

It is an amenable number.

394287050089 is a deficient number, since it is larger than the sum of its proper divisors (1).

394287050089 is an equidigital number, since it uses as much as digits as its factorization.

394287050089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 394287050089 in words is "three hundred ninety-four billion, two hundred eighty-seven million, fifty thousand, eighty-nine".