804536939 has 2 divisors, whose sum is σ = 804536940. Its totient is φ = 804536938.

The previous prime is 804536933. The next prime is 804536963. The reversal of 804536939 is 939635408.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804536939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 804536893 and 804536902.

It is not a weakly prime, because it can be changed into another prime (804536933) 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, 402268469 + 402268470.

It is an arithmetic number, because the mean of its divisors is an integer number (402268470).

Almost surely, 2^804536939 is an apocalyptic number.

804536939 is a deficient number, since it is larger than the sum of its proper divisors (1).

804536939 is an equidigital number, since it uses as much as digits as its factorization.

804536939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 804536939 is about 28364.3603664881. The cubic root of 804536939 is about 930.0693435017.

It can be divided in two parts, 8045369 and 39, that added together give a palindrome (8045408).

The spelling of 804536939 in words is "eight hundred four million, five hundred thirty-six thousand, nine hundred thirty-nine".