3129917689 has 2 divisors, whose sum is σ = 3129917690. Its totient is φ = 3129917688.

The previous prime is 3129917683. The next prime is 3129917701. The reversal of 3129917689 is 9867199213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3036891664 + 93026025 = 55108^2 + 9645^2 .

It is an emirp because it is prime and its reverse (9867199213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3129917689 - 2⁷ = 3129917561 is a prime.

It is not a weakly prime, because it can be changed into another prime (3129917683) 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, 1564958844 + 1564958845.

It is an arithmetic number, because the mean of its divisors is an integer number (1564958845).

Almost surely, 2^3129917689 is an apocalyptic number.

It is an amenable number.

3129917689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129917689 is an equidigital number, since it uses as much as digits as its factorization.

3129917689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 55.

The square root of 3129917689 is about 55945.6672942597. The cubic root of 3129917689 is about 1462.7753690363.

The spelling of 3129917689 in words is "three billion, one hundred twenty-nine million, nine hundred seventeen thousand, six hundred eighty-nine".