6839804705 has 16 divisors (see below), whose sum is σ = 8444099664. Its totient is φ = 5315435520.

The previous prime is 6839804689. The next prime is 6839804717. The reversal of 6839804705 is 5074089386.

It can be written as a sum of positive squares in 8 ways, for example, as 4065465121 + 2774339584 = 63761^2 + 52672^2 .

It is not a de Polignac number, because 6839804705 - 2⁴ = 6839804689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23834 + ... + 119363.

It is an arithmetic number, because the mean of its divisors is an integer number (527756229).

Almost surely, 2^6839804705 is an apocalyptic number.

It is an amenable number.

6839804705 is a deficient number, since it is larger than the sum of its proper divisors (1604294959).

6839804705 is a wasteful number, since it uses less digits than its factorization.

6839804705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143476.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 6839804705 is about 82703.1118217447. Note that the first 3 decimals coincide. The cubic root of 6839804705 is about 1898.2259252760.

The spelling of 6839804705 in words is "six billion, eight hundred thirty-nine million, eight hundred four thousand, seven hundred five".