3978589609 has 2 divisors, whose sum is σ = 3978589610. Its totient is φ = 3978589608.

The previous prime is 3978589597. The next prime is 3978589619. The reversal of 3978589609 is 9069858793.

It is a happy number.

3978589609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3950499609 + 28090000 = 62853^2 + 5300^2 .

It is a cyclic number.

It is not a de Polignac number, because 3978589609 - 2⁷ = 3978589481 is a prime.

It is a super-3 number, since 3×3978589609³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3978589619) 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, 1989294804 + 1989294805.

It is an arithmetic number, because the mean of its divisors is an integer number (1989294805).

Almost surely, 2^3978589609 is an apocalyptic number.

It is an amenable number.

3978589609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3978589609 is an equidigital number, since it uses as much as digits as its factorization.

3978589609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The square root of 3978589609 is about 63076.0620917318. The cubic root of 3978589609 is about 1584.5637438412.

The spelling of 3978589609 in words is "three billion, nine hundred seventy-eight million, five hundred eighty-nine thousand, six hundred nine".