6844129 has 2 divisors, whose sum is σ = 6844130. Its totient is φ = 6844128.

The previous prime is 6844127. The next prime is 6844141. The reversal of 6844129 is 9214486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 3157729 = 1920^2 + 1777^2 .

It is a cyclic number.

It is not a de Polignac number, because 6844129 - 2¹ = 6844127 is a prime.

Together with 6844127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6844094 and 6844103.

It is not a weakly prime, because it can be changed into another prime (6844121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422064 + 3422065.

It is an arithmetic number, because the mean of its divisors is an integer number (3422065).

Almost surely, 2^6844129 is an apocalyptic number.

It is an amenable number.

6844129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6844129 is an equidigital number, since it uses as much as digits as its factorization.

6844129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 6844129 is about 2616.1286283362. The cubic root of 6844129 is about 189.8625876248.

The spelling of 6844129 in words is "six million, eight hundred forty-four thousand, one hundred twenty-nine".