8040839 has 2 divisors, whose sum is σ = 8040840. Its totient is φ = 8040838.

The previous prime is 8040829. The next prime is 8040853. The reversal of 8040839 is 9380408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8040839 - 2⁸ = 8040583 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8040829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4020419 + 4020420.

It is an arithmetic number, because the mean of its divisors is an integer number (4020420).

Almost surely, 2^8040839 is an apocalyptic number.

8040839 is a deficient number, since it is larger than the sum of its proper divisors (1).

8040839 is an equidigital number, since it uses as much as digits as its factorization.

8040839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 8040839 is about 2835.6373181350. The cubic root of 8040839 is about 200.3397475313.

The spelling of 8040839 in words is "eight million, forty thousand, eight hundred thirty-nine".