805299044 has 72 divisors (see below), whose sum is σ = 1658706840. Its totient is φ = 340623360.

The previous prime is 805299037. The next prime is 805299049. The reversal of 805299044 is 440992508.

It can be written as a sum of positive squares in 4 ways, for example, as 131377444 + 673921600 = 11462^2 + 25960^2 .

It is a junction number, because it is equal to n+sod(n) for n = 805298992 and 805299010.

It is not an unprimeable number, because it can be changed into a prime (805299049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 797612 + ... + 798620.

It is an arithmetic number, because the mean of its divisors is an integer number (23037595).

Almost surely, 2^805299044 is an apocalyptic number.

It is an amenable number.

805299044 is an abundant number, since it is smaller than the sum of its proper divisors (853407796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805299044 is a wasteful number, since it uses less digits than its factorization.

805299044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 805299044 is about 28377.7913869279. The cubic root of 805299044 is about 930.3629230634.

The spelling of 805299044 in words is "eight hundred five million, two hundred ninety-nine thousand, forty-four".