2839540309 has 2 divisors, whose sum is σ = 2839540310. Its totient is φ = 2839540308.

The previous prime is 2839540271. The next prime is 2839540343. The reversal of 2839540309 is 9030459382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1457559684 + 1381980625 = 38178^2 + 37175^2 .

It is a cyclic number.

It is not a de Polignac number, because 2839540309 - 2⁷ = 2839540181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2839540009) 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, 1419770154 + 1419770155.

It is an arithmetic number, because the mean of its divisors is an integer number (1419770155).

Almost surely, 2^2839540309 is an apocalyptic number.

It is an amenable number.

2839540309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2839540309 is an equidigital number, since it uses as much as digits as its factorization.

2839540309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2839540309 is about 53287.3372294019. The cubic root of 2839540309 is about 1416.0633392047.

The spelling of 2839540309 in words is "two billion, eight hundred thirty-nine million, five hundred forty thousand, three hundred nine".