809800041 has 8 divisors (see below), whose sum is σ = 1092742560. Its totient is φ = 533362112.

The previous prime is 809800039. The next prime is 809800067. The reversal of 809800041 is 140008908.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 809800041 - 2¹ = 809800039 is a prime.

It is a super-2 number, since 2×809800041² = 1311552212807203362, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 809799981 and 809800008.

It is not an unprimeable number, because it can be changed into a prime (809800001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625856 + ... + 1626353.

It is an arithmetic number, because the mean of its divisors is an integer number (136592820).

Almost surely, 2^809800041 is an apocalyptic number.

It is an amenable number.

809800041 is a deficient number, since it is larger than the sum of its proper divisors (282942519).

809800041 is a wasteful number, since it uses less digits than its factorization.

809800041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252295.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 809800041 is about 28456.9858031380. The cubic root of 809800041 is about 932.0930394110.

Adding to 809800041 its reverse (140008908), we get a palindrome (949808949).

The spelling of 809800041 in words is "eight hundred nine million, eight hundred thousand, forty-one".