4009485761 has 2 divisors, whose sum is σ = 4009485762. Its totient is φ = 4009485760.

The previous prime is 4009485721. The next prime is 4009485763. The reversal of 4009485761 is 1675849004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3652993600 + 356492161 = 60440^2 + 18881^2 .

It is a cyclic number.

It is not a de Polignac number, because 4009485761 - 2²⁶ = 3942376897 is a prime.

It is a Sophie Germain prime.

Together with 4009485763, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4009485763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004742880 + 2004742881.

It is an arithmetic number, because the mean of its divisors is an integer number (2004742881).

Almost surely, 2^4009485761 is an apocalyptic number.

It is an amenable number.

4009485761 is a deficient number, since it is larger than the sum of its proper divisors (1).

4009485761 is an equidigital number, since it uses as much as digits as its factorization.

4009485761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 4009485761 is about 63320.5003217757. The cubic root of 4009485761 is about 1588.6548702873.

The spelling of 4009485761 in words is "four billion, nine million, four hundred eighty-five thousand, seven hundred sixty-one".