804779863 has 2 divisors, whose sum is σ = 804779864. Its totient is φ = 804779862.

The previous prime is 804779839. The next prime is 804779879. The reversal of 804779863 is 368977408.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804779863 - 2⁹ = 804779351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 804779863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804779663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402389931 + 402389932.

It is an arithmetic number, because the mean of its divisors is an integer number (402389932).

Almost surely, 2^804779863 is an apocalyptic number.

804779863 is a deficient number, since it is larger than the sum of its proper divisors (1).

804779863 is an equidigital number, since it uses as much as digits as its factorization.

804779863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 804779863 is about 28368.6422480879. The cubic root of 804779863 is about 930.1629432766.

The spelling of 804779863 in words is "eight hundred four million, seven hundred seventy-nine thousand, eight hundred sixty-three".