804804840839 has 2 divisors, whose sum is σ = 804804840840. Its totient is φ = 804804840838.

The previous prime is 804804840761. The next prime is 804804840881. The reversal of 804804840839 is 938048408408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804804840839 - 2¹⁶ = 804804775303 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804804840439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402402420419 + 402402420420.

It is an arithmetic number, because the mean of its divisors is an integer number (402402420420).

Almost surely, 2^804804840839 is an apocalyptic number.

804804840839 is a deficient number, since it is larger than the sum of its proper divisors (1).

804804840839 is an equidigital number, since it uses as much as digits as its factorization.

804804840839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 804804840839 in words is "eight hundred four billion, eight hundred four million, eight hundred forty thousand, eight hundred thirty-nine".