8288432821 has 2 divisors, whose sum is σ = 8288432822. Its totient is φ = 8288432820.

The previous prime is 8288432771. The next prime is 8288432839. The reversal of 8288432821 is 1282348828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8004880900 + 283551921 = 89470^2 + 16839^2 .

It is a cyclic number.

It is not a de Polignac number, because 8288432821 - 2⁷ = 8288432693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8288432221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4144216410 + 4144216411.

It is an arithmetic number, because the mean of its divisors is an integer number (4144216411).

Almost surely, 2^8288432821 is an apocalyptic number.

It is an amenable number.

8288432821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8288432821 is an equidigital number, since it uses as much as digits as its factorization.

8288432821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393216, while the sum is 46.

The square root of 8288432821 is about 91040.8305157636. The cubic root of 8288432821 is about 2023.7528526365.

The spelling of 8288432821 in words is "eight billion, two hundred eighty-eight million, four hundred thirty-two thousand, eight hundred twenty-one".