4121759209 has 2 divisors, whose sum is σ = 4121759210. Its totient is φ = 4121759208.

The previous prime is 4121759207. The next prime is 4121759221. The reversal of 4121759209 is 9029571214.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4115864025 + 5895184 = 64155^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121759209 - 2¹ = 4121759207 is a prime.

Together with 4121759207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4121759207) 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, 2060879604 + 2060879605.

It is an arithmetic number, because the mean of its divisors is an integer number (2060879605).

Almost surely, 2^4121759209 is an apocalyptic number.

It is an amenable number.

4121759209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121759209 is an equidigital number, since it uses as much as digits as its factorization.

4121759209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 4121759209 is about 64200.9284122901. The cubic root of 4121759209 is about 1603.3470570452.

The spelling of 4121759209 in words is "four billion, one hundred twenty-one million, seven hundred fifty-nine thousand, two hundred nine".