6947391 has 8 divisors (see below), whose sum is σ = 10105344. Its totient is φ = 4210520.

The previous prime is 6947389. The next prime is 6947401. The reversal of 6947391 is 1937496.

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 6947391 - 2¹ = 6947389 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6947321) 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 7 ways as a sum of consecutive naturals, for example, 105231 + ... + 105296.

It is an arithmetic number, because the mean of its divisors is an integer number (1263168).

Almost surely, 2^6947391 is an apocalyptic number.

6947391 is a deficient number, since it is larger than the sum of its proper divisors (3157953).

6947391 is a wasteful number, since it uses less digits than its factorization.

6947391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210541.

The product of its digits is 40824, while the sum is 39.

The square root of 6947391 is about 2635.7903937908. The cubic root of 6947391 is about 190.8126869896.

The spelling of 6947391 in words is "six million, nine hundred forty-seven thousand, three hundred ninety-one".