4199956909 has 2 divisors, whose sum is σ = 4199956910. Its totient is φ = 4199956908.

The previous prime is 4199956907. The next prime is 4199956919. The reversal of 4199956909 is 9096599914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3100039684 + 1099917225 = 55678^2 + 33165^2 .

It is a cyclic number.

It is not a de Polignac number, because 4199956909 - 2¹ = 4199956907 is a prime.

Together with 4199956907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4199956907) 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, 2099978454 + 2099978455.

It is an arithmetic number, because the mean of its divisors is an integer number (2099978455).

Almost surely, 2^4199956909 is an apocalyptic number.

It is an amenable number.

4199956909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4199956909 is an equidigital number, since it uses as much as digits as its factorization.

4199956909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7085880, while the sum is 61.

The square root of 4199956909 is about 64807.0745289432. The cubic root of 4199956909 is about 1613.4231282078.

The spelling of 4199956909 in words is "four billion, one hundred ninety-nine million, nine hundred fifty-six thousand, nine hundred nine".