809135417 has 6 divisors (see below), whose sum is σ = 856855818. Its totient is φ = 761428832.

The previous prime is 809135407. The next prime is 809135443. The reversal of 809135417 is 714531908.

809135417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 761539216 + 47596201 = 27596^2 + 6899^2 .

It is not a de Polignac number, because 809135417 - 2¹⁶ = 809069881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809135407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113834 + ... + 120732.

It is an arithmetic number, because the mean of its divisors is an integer number (142809303).

Almost surely, 2^809135417 is an apocalyptic number.

It is an amenable number.

809135417 is a deficient number, since it is larger than the sum of its proper divisors (47720401).

809135417 is an frugal number, since it uses more digits than its factorization.

809135417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815 (or 6916 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 809135417 is about 28445.3057111362. The cubic root of 809135417 is about 931.8379719344.

The spelling of 809135417 in words is "eight hundred nine million, one hundred thirty-five thousand, four hundred seventeen".