394606562773 has 2 divisors, whose sum is σ = 394606562774. Its totient is φ = 394606562772.

The previous prime is 394606562747. The next prime is 394606562783. The reversal of 394606562773 is 377265606493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210738837969 + 183867724804 = 459063^2 + 428798^2 .

It is an emirp because it is prime and its reverse (377265606493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394606562773 - 2⁵ = 394606562741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394606562743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197303281386 + 197303281387.

It is an arithmetic number, because the mean of its divisors is an integer number (197303281387).

Almost surely, 2^394606562773 is an apocalyptic number.

It is an amenable number.

394606562773 is a deficient number, since it is larger than the sum of its proper divisors (1).

394606562773 is an equidigital number, since it uses as much as digits as its factorization.

394606562773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 58.

The spelling of 394606562773 in words is "three hundred ninety-four billion, six hundred six million, five hundred sixty-two thousand, seven hundred seventy-three".