393929929393 has 64 divisors (see below), whose sum is σ = 531717193728. Its totient is φ = 281847755520.

The previous prime is 393929929361. The next prime is 393929929397.

393929929393 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 393929929393 - 2⁵ = 393929929361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (393929929397) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 301399446 + ... + 301400752.

It is an arithmetic number, because the mean of its divisors is an integer number (8308081152).

Almost surely, 2^393929929393 is an apocalyptic number.

It is an amenable number.

393929929393 is a deficient number, since it is larger than the sum of its proper divisors (137787264335).

393929929393 is a wasteful number, since it uses less digits than its factorization.

393929929393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

The product of its digits is 172186884, while the sum is 70.

The spelling of 393929929393 in words is "three hundred ninety-three billion, nine hundred twenty-nine million, nine hundred twenty-nine thousand, three hundred ninety-three".