4972129709 has 2 divisors, whose sum is σ = 4972129710. Its totient is φ = 4972129708.

The previous prime is 4972129681. The next prime is 4972129739. The reversal of 4972129709 is 9079212794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4522562500 + 449567209 = 67250^2 + 21203^2 .

It is a cyclic number.

It is not a de Polignac number, because 4972129709 - 2⁸ = 4972129453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4972129739) 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, 2486064854 + 2486064855.

It is an arithmetic number, because the mean of its divisors is an integer number (2486064855).

Almost surely, 2^4972129709 is an apocalyptic number.

It is an amenable number.

4972129709 is a deficient number, since it is larger than the sum of its proper divisors (1).

4972129709 is an equidigital number, since it uses as much as digits as its factorization.

4972129709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 4972129709 is about 70513.3300092968. The cubic root of 4972129709 is about 1706.7928566048.

The spelling of 4972129709 in words is "four billion, nine hundred seventy-two million, one hundred twenty-nine thousand, seven hundred nine".