3845908709 has 2 divisors, whose sum is σ = 3845908710. Its totient is φ = 3845908708.

The previous prime is 3845908643. The next prime is 3845908727. The reversal of 3845908709 is 9078095483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3260752609 + 585156100 = 57103^2 + 24190^2 .

It is a cyclic number.

It is not a de Polignac number, because 3845908709 - 2¹² = 3845904613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3845908739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1922954354 + 1922954355.

It is an arithmetic number, because the mean of its divisors is an integer number (1922954355).

Almost surely, 2^3845908709 is an apocalyptic number.

It is an amenable number.

3845908709 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845908709 is an equidigital number, since it uses as much as digits as its factorization.

3845908709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 3845908709 is about 62015.3909041941. The cubic root of 3845908709 is about 1566.7498328317.

The spelling of 3845908709 in words is "three billion, eight hundred forty-five million, nine hundred eight thousand, seven hundred nine".