1329840859 has 2 divisors, whose sum is σ = 1329840860. Its totient is φ = 1329840858.

The previous prime is 1329840829. The next prime is 1329840871. The reversal of 1329840859 is 9580489231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1329840859 - 2⁷ = 1329840731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1329840829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664920429 + 664920430.

It is an arithmetic number, because the mean of its divisors is an integer number (664920430).

Almost surely, 2^1329840859 is an apocalyptic number.

1329840859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329840859 is an equidigital number, since it uses as much as digits as its factorization.

1329840859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 1329840859 is about 36466.9831354336. The cubic root of 1329840859 is about 1099.6805846684.

The spelling of 1329840859 in words is "one billion, three hundred twenty-nine million, eight hundred forty thousand, eight hundred fifty-nine".