3959909389 has 2 divisors, whose sum is σ = 3959909390. Its totient is φ = 3959909388.

The previous prime is 3959909383. The next prime is 3959909413. The reversal of 3959909389 is 9839099593.

3959909389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2956096900 + 1003812489 = 54370^2 + 31683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3959909389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3959909389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3959909383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979954694 + 1979954695.

It is an arithmetic number, because the mean of its divisors is an integer number (1979954695).

Almost surely, 2^3959909389 is an apocalyptic number.

It is an amenable number.

3959909389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959909389 is an equidigital number, since it uses as much as digits as its factorization.

3959909389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21257640, while the sum is 64.

The square root of 3959909389 is about 62927.8109344350. The cubic root of 3959909389 is about 1582.0799116872.

The spelling of 3959909389 in words is "three billion, nine hundred fifty-nine million, nine hundred nine thousand, three hundred eighty-nine".