395643713 has 2 divisors, whose sum is σ = 395643714. Its totient is φ = 395643712.

The previous prime is 395643673. The next prime is 395643739. The reversal of 395643713 is 317346593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391367089 + 4276624 = 19783^2 + 2068^2 .

It is a cyclic number.

It is not a de Polignac number, because 395643713 - 2⁶ = 395643649 is a prime.

It is not a weakly prime, because it can be changed into another prime (395643763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197821856 + 197821857.

It is an arithmetic number, because the mean of its divisors is an integer number (197821857).

Almost surely, 2^395643713 is an apocalyptic number.

It is an amenable number.

395643713 is a deficient number, since it is larger than the sum of its proper divisors (1).

395643713 is an equidigital number, since it uses as much as digits as its factorization.

395643713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 41.

The square root of 395643713 is about 19890.7946799518. The cubic root of 395643713 is about 734.1217473583.

The spelling of 395643713 in words is "three hundred ninety-five million, six hundred forty-three thousand, seven hundred thirteen".