6843949 has 8 divisors (see below), whose sum is σ = 8161920. Its totient is φ = 5611056.

The previous prime is 6843937. The next prime is 6843953. The reversal of 6843949 is 9493486.

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 6843949 - 2⁵ = 6843917 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 8⁷ + 4³ + 3⁹ + 9 + 4¹¹ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6843919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21094 + ... + 21415.

It is an arithmetic number, because the mean of its divisors is an integer number (1020240).

Almost surely, 2^6843949 is an apocalyptic number.

It is an amenable number.

6843949 is a deficient number, since it is larger than the sum of its proper divisors (1317971).

6843949 is a wasteful number, since it uses less digits than its factorization.

6843949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42539.

The product of its digits is 186624, while the sum is 43.

The square root of 6843949 is about 2616.0942261318. The cubic root of 6843949 is about 189.8609231536.

The spelling of 6843949 in words is "six million, eight hundred forty-three thousand, nine hundred forty-nine".