6859739 has 2 divisors, whose sum is σ = 6859740. Its totient is φ = 6859738.

The previous prime is 6859733. The next prime is 6859757. The reversal of 6859739 is 9379586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6859739 - 2¹² = 6855643 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 6859693 and 6859702.

It is not a weakly prime, because it can be changed into another prime (6859733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429869 + 3429870.

It is an arithmetic number, because the mean of its divisors is an integer number (3429870).

Almost surely, 2^6859739 is an apocalyptic number.

6859739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6859739 is an equidigital number, since it uses as much as digits as its factorization.

6859739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 6859739 is about 2619.1103451363. The cubic root of 6859739 is about 190.0068233930.

The spelling of 6859739 in words is "six million, eight hundred fifty-nine thousand, seven hundred thirty-nine".