396886688693 has 4 divisors (see below), whose sum is σ = 432967296768. Its totient is φ = 360806080620.

The previous prime is 396886688687. The next prime is 396886688713.

396886688693 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 396886688693 - 2⁸ = 396886688437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396886688993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18040304021 + ... + 18040304042.

It is an arithmetic number, because the mean of its divisors is an integer number (108241824192).

Almost surely, 2^396886688693 is an apocalyptic number.

It is an amenable number.

396886688693 is a deficient number, since it is larger than the sum of its proper divisors (36080608075).

396886688693 is a wasteful number, since it uses less digits than its factorization.

396886688693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36080608074.

The product of its digits is 3869835264, while the sum is 80.

The spelling of 396886688693 in words is "three hundred ninety-six billion, eight hundred eighty-six million, six hundred eighty-eight thousand, six hundred ninety-three".