8519399069 has 2 divisors, whose sum is σ = 8519399070. Its totient is φ = 8519399068.

The previous prime is 8519399051. The next prime is 8519399131. The reversal of 8519399069 is 9609939158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6563106169 + 1956292900 = 81013^2 + 44230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8519399069 is a prime.

It is a super-2 number, since 2×8519399069² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8519398999 and 8519399017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8519399029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259699534 + 4259699535.

It is an arithmetic number, because the mean of its divisors is an integer number (4259699535).

Almost surely, 2^8519399069 is an apocalyptic number.

It is an amenable number.

8519399069 is a deficient number, since it is larger than the sum of its proper divisors (1).

8519399069 is an equidigital number, since it uses as much as digits as its factorization.

8519399069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4723920, while the sum is 59.

The square root of 8519399069 is about 92300.5908377622. The cubic root of 8519399069 is about 2042.3789264286.

The spelling of 8519399069 in words is "eight billion, five hundred nineteen million, three hundred ninety-nine thousand, sixty-nine".