809797471 has 12 divisors (see below), whose sum is σ = 942729840. Its totient is φ = 693581280.

The previous prime is 809797463. The next prime is 809797481. The reversal of 809797471 is 174797908.

It is not a de Polignac number, because 809797471 - 2³ = 809797463 is a prime.

It is a super-3 number, since 3×809797471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809797481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66990 + ... + 78148.

It is an arithmetic number, because the mean of its divisors is an integer number (78560820).

Almost surely, 2^809797471 is an apocalyptic number.

809797471 is a deficient number, since it is larger than the sum of its proper divisors (132932369).

809797471 is a wasteful number, since it uses less digits than its factorization.

809797471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12654 (or 12647 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 809797471 is about 28456.9406472305. The cubic root of 809797471 is about 932.0920533727.

The spelling of 809797471 in words is "eight hundred nine million, seven hundred ninety-seven thousand, four hundred seventy-one".