393253928549 has 2 divisors, whose sum is σ = 393253928550. Its totient is φ = 393253928548.

The previous prime is 393253928531. The next prime is 393253928579. The reversal of 393253928549 is 945829352393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287054850625 + 106199077924 = 535775^2 + 325882^2 .

It is a cyclic number.

It is not a de Polignac number, because 393253928549 - 2⁸ = 393253928293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 393253928491 and 393253928500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393253928579) 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, 196626964274 + 196626964275.

It is an arithmetic number, because the mean of its divisors is an integer number (196626964275).

Almost surely, 2^393253928549 is an apocalyptic number.

It is an amenable number.

393253928549 is a deficient number, since it is larger than the sum of its proper divisors (1).

393253928549 is an equidigital number, since it uses as much as digits as its factorization.

393253928549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62985600, while the sum is 62.

The spelling of 393253928549 in words is "three hundred ninety-three billion, two hundred fifty-three million, nine hundred twenty-eight thousand, five hundred forty-nine".