6858224839 has 2 divisors, whose sum is σ = 6858224840. Its totient is φ = 6858224838.

The previous prime is 6858224809. The next prime is 6858224851. The reversal of 6858224839 is 9384228586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6858224839 - 2¹³ = 6858216647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6858224839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6858224809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429112419 + 3429112420.

It is an arithmetic number, because the mean of its divisors is an integer number (3429112420).

Almost surely, 2^6858224839 is an apocalyptic number.

6858224839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858224839 is an equidigital number, since it uses as much as digits as its factorization.

6858224839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 55.

The square root of 6858224839 is about 82814.3999495257. The cubic root of 6858224839 is about 1899.9284219572.

The spelling of 6858224839 in words is "six billion, eight hundred fifty-eight million, two hundred twenty-four thousand, eight hundred thirty-nine".