6939841 has 4 divisors (see below), whose sum is σ = 6960772. Its totient is φ = 6918912.

The previous prime is 6939827. The next prime is 6939887. The reversal of 6939841 is 1489396.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4752400 + 2187441 = 2180^2 + 1479^2 .

It is a cyclic number.

It is not a de Polignac number, because 6939841 - 2¹³ = 6931649 is a prime.

It is a super-2 number, since 2×6939841² = 96322786210562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6939794 and 6939803.

It is not an unprimeable number, because it can be changed into a prime (6939341) 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 3 ways as a sum of consecutive naturals, for example, 9960 + ... + 10633.

It is an arithmetic number, because the mean of its divisors is an integer number (1740193).

Almost surely, 2^6939841 is an apocalyptic number.

It is an amenable number.

6939841 is a deficient number, since it is larger than the sum of its proper divisors (20931).

6939841 is a wasteful number, since it uses less digits than its factorization.

6939841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20930.

The product of its digits is 46656, while the sum is 40.

The square root of 6939841 is about 2634.3577965037. The cubic root of 6939841 is about 190.7435407462.

The spelling of 6939841 in words is "six million, nine hundred thirty-nine thousand, eight hundred forty-one".