8519407009 has 2 divisors, whose sum is σ = 8519407010. Its totient is φ = 8519407008.

The previous prime is 8519407003. The next prime is 8519407103. The reversal of 8519407009 is 9007049158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5699797009 + 2819610000 = 75497^2 + 53100^2 .

It is a cyclic number.

It is not a de Polignac number, because 8519407009 - 2⁷ = 8519406881 is a prime.

It is not a weakly prime, because it can be changed into another prime (8519407003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259703504 + 4259703505.

It is an arithmetic number, because the mean of its divisors is an integer number (4259703505).

Almost surely, 2^8519407009 is an apocalyptic number.

It is an amenable number.

8519407009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8519407009 is an equidigital number, since it uses as much as digits as its factorization.

8519407009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 8519407009 is about 92300.6338493946. The cubic root of 8519407009 is about 2042.3795609211.

The spelling of 8519407009 in words is "eight billion, five hundred nineteen million, four hundred seven thousand, nine".