393791659969 has 8 divisors (see below), whose sum is σ = 405174067328. Its totient is φ = 382448167920.

The previous prime is 393791659967. The next prime is 393791659993. The reversal of 393791659969 is 969956197393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 393791659969 - 2¹ = 393791659967 is a prime.

It is a super-2 number, since 2×393791659969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 393791659895 and 393791659904.

It is not an unprimeable number, because it can be changed into a prime (393791659967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9708297 + ... + 9748774.

It is an arithmetic number, because the mean of its divisors is an integer number (50646758416).

Almost surely, 2^393791659969 is an apocalyptic number.

It is an amenable number.

393791659969 is a deficient number, since it is larger than the sum of its proper divisors (11382407359).

393791659969 is a wasteful number, since it uses less digits than its factorization.

393791659969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457655.

The product of its digits is 669615660, while the sum is 76.

The spelling of 393791659969 in words is "three hundred ninety-three billion, seven hundred ninety-one million, six hundred fifty-nine thousand, nine hundred sixty-nine".