6839121 has 4 divisors (see below), whose sum is σ = 9118832. Its totient is φ = 4559412.

The previous prime is 6839113. The next prime is 6839123. The reversal of 6839121 is 1219386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6839121 - 2³ = 6839113 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6839123) 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, 1139851 + ... + 1139856.

It is an arithmetic number, because the mean of its divisors is an integer number (2279708).

Almost surely, 2^6839121 is an apocalyptic number.

It is an amenable number.

6839121 is a deficient number, since it is larger than the sum of its proper divisors (2279711).

6839121 is a wasteful number, since it uses less digits than its factorization.

6839121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279710.

The product of its digits is 2592, while the sum is 30.

The square root of 6839121 is about 2615.1713137001. The cubic root of 6839121 is about 189.8162674454.

The spelling of 6839121 in words is "six million, eight hundred thirty-nine thousand, one hundred twenty-one".