4168998409 has 2 divisors, whose sum is σ = 4168998410. Its totient is φ = 4168998408.

The previous prime is 4168998397. The next prime is 4168998413. The reversal of 4168998409 is 9048998614.

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., 3240455625 + 928542784 = 56925^2 + 30472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4168998409 is a prime.

It is not a weakly prime, because it can be changed into another prime (4168998209) 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, 2084499204 + 2084499205.

It is an arithmetic number, because the mean of its divisors is an integer number (2084499205).

Almost surely, 2^4168998409 is an apocalyptic number.

It is an amenable number.

4168998409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4168998409 is an equidigital number, since it uses as much as digits as its factorization.

4168998409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The square root of 4168998409 is about 64567.7815090468. The cubic root of 4168998409 is about 1609.4490880294.

The spelling of 4168998409 in words is "four billion, one hundred sixty-eight million, nine hundred ninety-eight thousand, four hundred nine".