6857839297 has 2 divisors, whose sum is σ = 6857839298. Its totient is φ = 6857839296.

The previous prime is 6857839279. The next prime is 6857839327. The reversal of 6857839297 is 7929387586.

Together with previous prime (6857839279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5164434496 + 1693404801 = 71864^2 + 41151^2 .

It is a cyclic number.

It is not a de Polignac number, because 6857839297 - 2¹¹ = 6857837249 is a prime.

It is not a weakly prime, because it can be changed into another prime (6857839207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428919648 + 3428919649.

It is an arithmetic number, because the mean of its divisors is an integer number (3428919649).

Almost surely, 2^6857839297 is an apocalyptic number.

It is an amenable number.

6857839297 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857839297 is an equidigital number, since it uses as much as digits as its factorization.

6857839297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 64.

The square root of 6857839297 is about 82812.0721694609. The cubic root of 6857839297 is about 1899.8928191617.

The spelling of 6857839297 in words is "six billion, eight hundred fifty-seven million, eight hundred thirty-nine thousand, two hundred ninety-seven".