3420865139 has 2 divisors, whose sum is σ = 3420865140. Its totient is φ = 3420865138.

The previous prime is 3420865121. The next prime is 3420865181. The reversal of 3420865139 is 9315680243.

It is a weak prime.

It is an emirp because it is prime and its reverse (9315680243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3420865139 - 2¹² = 3420861043 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3420865096 and 3420865105.

It is not a weakly prime, because it can be changed into another prime (3420865109) 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, 1710432569 + 1710432570.

It is an arithmetic number, because the mean of its divisors is an integer number (1710432570).

Almost surely, 2^3420865139 is an apocalyptic number.

3420865139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420865139 is an equidigital number, since it uses as much as digits as its factorization.

3420865139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 3420865139 is about 58488.1623835114. The cubic root of 3420865139 is about 1506.7642858463.

The spelling of 3420865139 in words is "three billion, four hundred twenty million, eight hundred sixty-five thousand, one hundred thirty-nine".