3956956789 has 2 divisors, whose sum is σ = 3956956790. Its totient is φ = 3956956788.

The previous prime is 3956956763. The next prime is 3956956807. The reversal of 3956956789 is 9876596593.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2931356164 + 1025600625 = 54142^2 + 32025^2 .

It is an emirp because it is prime and its reverse (9876596593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3956956789 - 2¹¹ = 3956954741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3956956189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978478394 + 1978478395.

It is an arithmetic number, because the mean of its divisors is an integer number (1978478395).

Almost surely, 2^3956956789 is an apocalyptic number.

It is an amenable number.

3956956789 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956956789 is an equidigital number, since it uses as much as digits as its factorization.

3956956789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110224800, while the sum is 67.

The square root of 3956956789 is about 62904.3463442710. The cubic root of 3956956789 is about 1581.6866021299.

The spelling of 3956956789 in words is "three billion, nine hundred fifty-six million, nine hundred fifty-six thousand, seven hundred eighty-nine".