393539351089 has 2 divisors, whose sum is σ = 393539351090. Its totient is φ = 393539351088.

The previous prime is 393539351077. The next prime is 393539351099. The reversal of 393539351089 is 980153935393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312318911025 + 81220440064 = 558855^2 + 284992^2 .

It is a cyclic number.

It is not a de Polignac number, because 393539351089 - 2¹³ = 393539342897 is a prime.

It is not a weakly prime, because it can be changed into another prime (393539351099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196769675544 + 196769675545.

It is an arithmetic number, because the mean of its divisors is an integer number (196769675545).

Almost surely, 2^393539351089 is an apocalyptic number.

It is an amenable number.

393539351089 is a deficient number, since it is larger than the sum of its proper divisors (1).

393539351089 is an equidigital number, since it uses as much as digits as its factorization.

393539351089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11809800, while the sum is 58.

The spelling of 393539351089 in words is "three hundred ninety-three billion, five hundred thirty-nine million, three hundred fifty-one thousand, eighty-nine".