393309384321 has 12 divisors (see below), whose sum is σ = 610030882032. Its totient is φ = 224748219528.

The previous prime is 393309384319. The next prime is 393309384359. The reversal of 393309384321 is 123483903393.

It is not a de Polignac number, because 393309384321 - 2¹ = 393309384319 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (393309384301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1337786875 + ... + 1337787168.

It is an arithmetic number, because the mean of its divisors is an integer number (50835906836).

Almost surely, 2^393309384321 is an apocalyptic number.

It is an amenable number.

393309384321 is a deficient number, since it is larger than the sum of its proper divisors (216721497711).

393309384321 is a wasteful number, since it uses less digits than its factorization.

393309384321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675574060 (or 2675574053 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 48.

The spelling of 393309384321 in words is "three hundred ninety-three billion, three hundred nine million, three hundred eighty-four thousand, three hundred twenty-one".