809859416 has 32 divisors (see below), whose sum is σ = 1542564000. Its totient is φ = 398551296.

The previous prime is 809859409. The next prime is 809859419. The reversal of 809859416 is 614958908.

It is a happy number.

It is a super-2 number, since 2×809859416² = 1311744547367722112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809859419) 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 7 ways as a sum of consecutive naturals, for example, 160565 + ... + 165531.

It is an arithmetic number, because the mean of its divisors is an integer number (48205125).

Almost surely, 2^809859416 is an apocalyptic number.

It is an amenable number.

809859416 is a deficient number, since it is larger than the sum of its proper divisors (732704584).

809859416 is a wasteful number, since it uses less digits than its factorization.

809859416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291 (or 5287 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 809859416 is about 28458.0290252154. The cubic root of 809859416 is about 932.1158193850.

The spelling of 809859416 in words is "eight hundred nine million, eight hundred fifty-nine thousand, four hundred sixteen".