397686793 has 24 divisors (see below), whose sum is σ = 472189824. Its totient is φ = 333900000.

The previous prime is 397686791. The next prime is 397686803.

397686793 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 397686793 - 2¹ = 397686791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397686791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 529168 + ... + 529918.

It is an arithmetic number, because the mean of its divisors is an integer number (19674576).

Almost surely, 2^397686793 is an apocalyptic number.

It is an amenable number.

397686793 is a deficient number, since it is larger than the sum of its proper divisors (74503031).

397686793 is a wasteful number, since it uses less digits than its factorization.

397686793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 966 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 58.

The square root of 397686793 is about 19942.0859741402. The cubic root of 397686793 is about 735.3832317417.

The spelling of 397686793 in words is "three hundred ninety-seven million, six hundred eighty-six thousand, seven hundred ninety-three".