804494879 has 2 divisors, whose sum is σ = 804494880. Its totient is φ = 804494878.

The previous prime is 804494861. The next prime is 804494881. The reversal of 804494879 is 978494408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804494879 - 2¹⁶ = 804429343 is a prime.

Together with 804494881, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 804494879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804494809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402247439 + 402247440.

It is an arithmetic number, because the mean of its divisors is an integer number (402247440).

Almost surely, 2^804494879 is an apocalyptic number.

804494879 is a deficient number, since it is larger than the sum of its proper divisors (1).

804494879 is an equidigital number, since it uses as much as digits as its factorization.

804494879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 804494879 is about 28363.6189334154. The cubic root of 804494879 is about 930.0531356699.

The spelling of 804494879 in words is "eight hundred four million, four hundred ninety-four thousand, eight hundred seventy-nine".