4066172249 has 2 divisors, whose sum is σ = 4066172250. Its totient is φ = 4066172248.

The previous prime is 4066172237. The next prime is 4066172291. The reversal of 4066172249 is 9422716604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2377537600 + 1688634649 = 48760^2 + 41093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4066172249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4066172219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2033086124 + 2033086125.

It is an arithmetic number, because the mean of its divisors is an integer number (2033086125).

Almost surely, 2^4066172249 is an apocalyptic number.

It is an amenable number.

4066172249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4066172249 is an equidigital number, since it uses as much as digits as its factorization.

4066172249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 4066172249 is about 63766.5449040482. The cubic root of 4066172249 is about 1596.1067123839.

The spelling of 4066172249 in words is "four billion, sixty-six million, one hundred seventy-two thousand, two hundred forty-nine".