8484640469 has 2 divisors, whose sum is σ = 8484640470. Its totient is φ = 8484640468.

The previous prime is 8484640447. The next prime is 8484640501. The reversal of 8484640469 is 9640464848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4912187569 + 3572452900 = 70087^2 + 59770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8484640469 is a prime.

It is a super-2 number, since 2×8484640469² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8484640469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8484640429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4242320234 + 4242320235.

It is an arithmetic number, because the mean of its divisors is an integer number (4242320235).

Almost surely, 2^8484640469 is an apocalyptic number.

It is an amenable number.

8484640469 is a deficient number, since it is larger than the sum of its proper divisors (1).

8484640469 is an equidigital number, since it uses as much as digits as its factorization.

8484640469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 53.

The square root of 8484640469 is about 92112.1081563114. The cubic root of 8484640469 is about 2039.5975488456.

The spelling of 8484640469 in words is "eight billion, four hundred eighty-four million, six hundred forty thousand, four hundred sixty-nine".