4959509509 has 2 divisors, whose sum is σ = 4959509510. Its totient is φ = 4959509508.

The previous prime is 4959509507. The next prime is 4959509543. The reversal of 4959509509 is 9059059594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4195152900 + 764356609 = 64770^2 + 27647^2 .

It is a cyclic number.

It is not a de Polignac number, because 4959509509 - 2¹ = 4959509507 is a prime.

It is a super-2 number, since 2×4959509509² = 49193469139722842162, which contains 22 as substring.

Together with 4959509507, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4959509509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4959509507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2479754754 + 2479754755.

It is an arithmetic number, because the mean of its divisors is an integer number (2479754755).

Almost surely, 2^4959509509 is an apocalyptic number.

It is an amenable number.

4959509509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4959509509 is an equidigital number, since it uses as much as digits as its factorization.

4959509509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3280500, while the sum is 55.

The square root of 4959509509 is about 70423.7851084419. The cubic root of 4959509509 is about 1705.3475793990.

The spelling of 4959509509 in words is "four billion, nine hundred fifty-nine million, five hundred nine thousand, five hundred nine".