394605853277 has 2 divisors, whose sum is σ = 394605853278. Its totient is φ = 394605853276.

The previous prime is 394605853247. The next prime is 394605853303. The reversal of 394605853277 is 772358506493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381021018361 + 13584834916 = 617269^2 + 116554^2 .

It is a cyclic number.

It is not a de Polignac number, because 394605853277 - 2¹⁴ = 394605836893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394605853247) 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, 197302926638 + 197302926639.

It is an arithmetic number, because the mean of its divisors is an integer number (197302926639).

Almost surely, 2^394605853277 is an apocalyptic number.

It is an amenable number.

394605853277 is a deficient number, since it is larger than the sum of its proper divisors (1).

394605853277 is an equidigital number, since it uses as much as digits as its factorization.

394605853277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38102400, while the sum is 59.

The spelling of 394605853277 in words is "three hundred ninety-four billion, six hundred five million, eight hundred fifty-three thousand, two hundred seventy-seven".