6249008509 has 2 divisors, whose sum is σ = 6249008510. Its totient is φ = 6249008508.

The previous prime is 6249008453. The next prime is 6249008533. The reversal of 6249008509 is 9058009426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5271195609 + 977812900 = 72603^2 + 31270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6249008509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6249008539) 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, 3124504254 + 3124504255.

It is an arithmetic number, because the mean of its divisors is an integer number (3124504255).

Almost surely, 2^6249008509 is an apocalyptic number.

It is an amenable number.

6249008509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6249008509 is an equidigital number, since it uses as much as digits as its factorization.

6249008509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 6249008509 is about 79050.6705158154. The cubic root of 6249008509 is about 1841.9183392604.

The spelling of 6249008509 in words is "six billion, two hundred forty-nine million, eight thousand, five hundred nine".