393968983095073 has 2 divisors, whose sum is σ = 393968983095074. Its totient is φ = 393968983095072.

The previous prime is 393968983095067. The next prime is 393968983095097. The reversal of 393968983095073 is 370590389869393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378591660034624 + 15377323060449 = 19457432^2 + 3921393^2 .

It is a cyclic number.

It is not a de Polignac number, because 393968983095073 - 2³⁷ = 393831544141601 is a prime.

It is not a weakly prime, because it can be changed into another prime (393968983090073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196984491547536 + 196984491547537.

It is an arithmetic number, because the mean of its divisors is an integer number (196984491547537).

Almost surely, 2^{393968983095073} is an apocalyptic number.

It is an amenable number.

393968983095073 is a deficient number, since it is larger than the sum of its proper divisors (1).

393968983095073 is an equidigital number, since it uses as much as digits as its factorization.

393968983095073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7142567040, while the sum is 82.

The spelling of 393968983095073 in words is "three hundred ninety-three trillion, nine hundred sixty-eight billion, nine hundred eighty-three million, ninety-five thousand, seventy-three".