8406328309 has 2 divisors, whose sum is σ = 8406328310. Its totient is φ = 8406328308.

The previous prime is 8406328297. The next prime is 8406328369. The reversal of 8406328309 is 9038236048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5449687684 + 2956640625 = 73822^2 + 54375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8406328309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8406328369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4203164154 + 4203164155.

It is an arithmetic number, because the mean of its divisors is an integer number (4203164155).

Almost surely, 2^8406328309 is an apocalyptic number.

It is an amenable number.

8406328309 is a deficient number, since it is larger than the sum of its proper divisors (1).

8406328309 is an equidigital number, since it uses as much as digits as its factorization.

8406328309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 8406328309 is about 91686.0311552420. The cubic root of 8406328309 is about 2033.3030672523.

The spelling of 8406328309 in words is "eight billion, four hundred six million, three hundred twenty-eight thousand, three hundred nine".