809120697 has 16 divisors (see below), whose sum is σ = 1345032192. Its totient is φ = 420322320.

The previous prime is 809120647. The next prime is 809120701. The reversal of 809120697 is 796021908.

809120697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 809120697 - 2¹⁰ = 809119673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (809120647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1751113 + ... + 1751574.

It is an arithmetic number, because the mean of its divisors is an integer number (84064512).

Almost surely, 2^809120697 is an apocalyptic number.

It is an amenable number.

809120697 is a deficient number, since it is larger than the sum of its proper divisors (535911495).

809120697 is a wasteful number, since it uses less digits than its factorization.

809120697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502708.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 809120697 is about 28445.0469677939. The cubic root of 809120697 is about 931.8323211546.

The spelling of 809120697 in words is "eight hundred nine million, one hundred twenty thousand, six hundred ninety-seven".