8821485769 has 2 divisors, whose sum is σ = 8821485770. Its totient is φ = 8821485768.

The previous prime is 8821485641. The next prime is 8821485787. The reversal of 8821485769 is 9675841288.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7766015625 + 1055470144 = 88125^2 + 32488^2 .

It is a cyclic number.

It is not a de Polignac number, because 8821485769 - 2⁷ = 8821485641 is a prime.

It is a super-2 number, since 2×8821485769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8821489769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410742884 + 4410742885.

It is an arithmetic number, because the mean of its divisors is an integer number (4410742885).

Almost surely, 2^8821485769 is an apocalyptic number.

It is an amenable number.

8821485769 is a deficient number, since it is larger than the sum of its proper divisors (1).

8821485769 is an equidigital number, since it uses as much as digits as its factorization.

8821485769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 58.

The square root of 8821485769 is about 93922.7649135182. The cubic root of 8821485769 is about 2066.2391177151.

The spelling of 8821485769 in words is "eight billion, eight hundred twenty-one million, four hundred eighty-five thousand, seven hundred sixty-nine".