8009428769 has 2 divisors, whose sum is σ = 8009428770. Its totient is φ = 8009428768.

The previous prime is 8009428753. The next prime is 8009428781. The reversal of 8009428769 is 9678249008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7967347600 + 42081169 = 89260^2 + 6487^2 .

It is a cyclic number.

It is not a de Polignac number, because 8009428769 - 2⁴ = 8009428753 is a prime.

It is a super-2 number, since 2×8009428769² (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 8009428769.

It is not a weakly prime, because it can be changed into another prime (8009428799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4004714384 + 4004714385.

It is an arithmetic number, because the mean of its divisors is an integer number (4004714385).

Almost surely, 2^8009428769 is an apocalyptic number.

It is an amenable number.

8009428769 is a deficient number, since it is larger than the sum of its proper divisors (1).

8009428769 is an equidigital number, since it uses as much as digits as its factorization.

8009428769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 8009428769 is about 89495.4119997221. The cubic root of 8009428769 is about 2000.7854222656.

The spelling of 8009428769 in words is "eight billion, nine million, four hundred twenty-eight thousand, seven hundred sixty-nine".