6931393 has 24 divisors (see below), whose sum is σ = 8753832. Its totient is φ = 5451264.

The previous prime is 6931391. The next prime is 6931403. The reversal of 6931393 is 3931396.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1882384 + 5049009 = 1372^2 + 2247^2 .

It is not a de Polignac number, because 6931393 - 2¹ = 6931391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6931391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44071 + ... + 44227.

It is an arithmetic number, because the mean of its divisors is an integer number (364743).

Almost surely, 2^6931393 is an apocalyptic number.

It is an amenable number.

6931393 is a deficient number, since it is larger than the sum of its proper divisors (1822439).

6931393 is a wasteful number, since it uses less digits than its factorization.

6931393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 234 counting only the distinct ones).

The product of its digits is 13122, while the sum is 34.

The square root of 6931393 is about 2632.7538813949. The cubic root of 6931393 is about 190.6661107427. Note that the first 3 decimals are identical.

The spelling of 6931393 in words is "six million, nine hundred thirty-one thousand, three hundred ninety-three".