804916777 has 24 divisors (see below), whose sum is σ = 969828552. Its totient is φ = 665683200.

The previous prime is 804916769. The next prime is 804916813. The reversal of 804916777 is 777619408.

It can be written as a sum of positive squares in 4 ways, for example, as 3136 + 804913641 = 56^2 + 28371^2 .

It is not a de Polignac number, because 804916777 - 2³ = 804916769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 804916777.

It is not an unprimeable number, because it can be changed into a prime (804916727) 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 in 23 ways as a sum of consecutive naturals, for example, 155877 + ... + 160957.

It is an arithmetic number, because the mean of its divisors is an integer number (40409523).

Almost surely, 2^804916777 is an apocalyptic number.

It is an amenable number.

804916777 is a deficient number, since it is larger than the sum of its proper divisors (164911775).

804916777 is a wasteful number, since it uses less digits than its factorization.

804916777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209 (or 5202 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 804916777 is about 28371.0552676491. The cubic root of 804916777 is about 930.2156885940.

The spelling of 804916777 in words is "eight hundred four million, nine hundred sixteen thousand, seven hundred seventy-seven".