804122939 has 2 divisors, whose sum is σ = 804122940. Its totient is φ = 804122938.

The previous prime is 804122929. The next prime is 804122947. The reversal of 804122939 is 939221408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804122939 - 2¹⁶ = 804057403 is a prime.

It is a super-2 number, since 2×804122939² = 1293227402051995442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (804122929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402061469 + 402061470.

It is an arithmetic number, because the mean of its divisors is an integer number (402061470).

Almost surely, 2^804122939 is an apocalyptic number.

804122939 is a deficient number, since it is larger than the sum of its proper divisors (1).

804122939 is an equidigital number, since it uses as much as digits as its factorization.

804122939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 804122939 is about 28357.0615367672. The cubic root of 804122939 is about 929.9097839030.

The spelling of 804122939 in words is "eight hundred four million, one hundred twenty-two thousand, nine hundred thirty-nine".