6859929397 has 2 divisors, whose sum is σ = 6859929398. Its totient is φ = 6859929396.

The previous prime is 6859929379. The next prime is 6859929409. The reversal of 6859929397 is 7939299586.

Together with previous prime (6859929379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5305519921 + 1554409476 = 72839^2 + 39426^2 .

It is a cyclic number.

It is not a de Polignac number, because 6859929397 - 2¹⁹ = 6859405109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6859939397) by changing a digit.

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 as a sum of consecutive naturals, namely, 3429964698 + 3429964699.

It is an arithmetic number, because the mean of its divisors is an integer number (3429964699).

Almost surely, 2^6859929397 is an apocalyptic number.

It is an amenable number.

6859929397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6859929397 is an equidigital number, since it uses as much as digits as its factorization.

6859929397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66134880, while the sum is 67.

The square root of 6859929397 is about 82824.6907449705. The cubic root of 6859929397 is about 1900.0858130217.

The spelling of 6859929397 in words is "six billion, eight hundred fifty-nine million, nine hundred twenty-nine thousand, three hundred ninety-seven".