6943409 has 8 divisors (see below), whose sum is σ = 7645440. Its totient is φ = 6253200.

The previous prime is 6943403. The next prime is 6943421. The reversal of 6943409 is 9043496.

It is a happy number.

6943409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6943409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6943403) 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 7 ways as a sum of consecutive naturals, for example, 1697 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (955680).

Almost surely, 2^6943409 is an apocalyptic number.

It is an amenable number.

6943409 is a deficient number, since it is larger than the sum of its proper divisors (702031).

6943409 is a wasteful number, since it uses less digits than its factorization.

6943409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6943409 is about 2635.0349143797. The cubic root of 6943409 is about 190.7762243169.

The spelling of 6943409 in words is "six million, nine hundred forty-three thousand, four hundred nine".