8240978329 has 2 divisors, whose sum is σ = 8240978330. Its totient is φ = 8240978328.

The previous prime is 8240978297. The next prime is 8240978351. The reversal of 8240978329 is 9238790428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5748672400 + 2492305929 = 75820^2 + 49923^2 .

It is a cyclic number.

It is not a de Polignac number, because 8240978329 - 2⁵ = 8240978297 is a prime.

It is not a weakly prime, because it can be changed into another prime (8240958329) 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, 4120489164 + 4120489165.

It is an arithmetic number, because the mean of its divisors is an integer number (4120489165).

Almost surely, 2^8240978329 is an apocalyptic number.

It is an amenable number.

8240978329 is a deficient number, since it is larger than the sum of its proper divisors (1).

8240978329 is an equidigital number, since it uses as much as digits as its factorization.

8240978329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 8240978329 is about 90779.8343741604. The cubic root of 8240978329 is about 2019.8832015106.

The spelling of 8240978329 in words is "eight billion, two hundred forty million, nine hundred seventy-eight thousand, three hundred twenty-nine".