6849405 has 24 divisors (see below), whose sum is σ = 12498720. Its totient is φ = 3460320.

The previous prime is 6849389. The next prime is 6849407. The reversal of 6849405 is 5049486.

6849405 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6849405 - 2⁴ = 6849389 is a prime.

6849405 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6849405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3151 + ... + 4860.

It is an arithmetic number, because the mean of its divisors is an integer number (520780).

Almost surely, 2^6849405 is an apocalyptic number.

It is an amenable number.

6849405 is a deficient number, since it is larger than the sum of its proper divisors (5649315).

6849405 is a wasteful number, since it uses less digits than its factorization.

6849405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8041 (or 8038 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 6849405 is about 2617.1367942849. The cubic root of 6849405 is about 189.9113621643.

The spelling of 6849405 in words is "six million, eight hundred forty-nine thousand, four hundred five".