8040230509 has 2 divisors, whose sum is σ = 8040230510. Its totient is φ = 8040230508.

The previous prime is 8040230489. The next prime is 8040230603. The reversal of 8040230509 is 9050320408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4425575625 + 3614654884 = 66525^2 + 60122^2 .

It is a cyclic number.

It is not a de Polignac number, because 8040230509 - 2³¹ = 5892746861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8040234509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4020115254 + 4020115255.

It is an arithmetic number, because the mean of its divisors is an integer number (4020115255).

Almost surely, 2^8040230509 is an apocalyptic number.

It is an amenable number.

8040230509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8040230509 is an equidigital number, since it uses as much as digits as its factorization.

8040230509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 8040230509 is about 89667.3324516794. The cubic root of 8040230509 is about 2003.3469382943.

The spelling of 8040230509 in words is "eight billion, forty million, two hundred thirty thousand, five hundred nine".