809937795 has 48 divisors (see below), whose sum is σ = 1374782112. Its totient is φ = 407116800.

The previous prime is 809937787. The next prime is 809937797. The reversal of 809937795 is 597739908.

It is not a de Polignac number, because 809937795 - 2³ = 809937787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (809937797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2019595 + ... + 2019995.

It is an arithmetic number, because the mean of its divisors is an integer number (28641294).

Almost surely, 2^809937795 is an apocalyptic number.

809937795 is a deficient number, since it is larger than the sum of its proper divisors (564844317).

809937795 is a wasteful number, since it uses less digits than its factorization.

809937795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 57.

The square root of 809937795 is about 28459.4060900785. The cubic root of 809937795 is about 932.1458887805.

It can be divided in two parts, 80993 and 7795, that added together give a palindrome (88788).

The spelling of 809937795 in words is "eight hundred nine million, nine hundred thirty-seven thousand, seven hundred ninety-five".