809226646 has 4 divisors (see below), whose sum is σ = 1213839972. Its totient is φ = 404613322.

The previous prime is 809226623. The next prime is 809226647. The reversal of 809226646 is 646622908.

809226646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809226647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202306660 + ... + 202306663.

It is an arithmetic number, because the mean of its divisors is an integer number (303459993).

Almost surely, 2^809226646 is an apocalyptic number.

809226646 is a deficient number, since it is larger than the sum of its proper divisors (404613326).

809226646 is a wasteful number, since it uses less digits than its factorization.

809226646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404613325.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 809226646 is about 28446.9092521490. The cubic root of 809226646 is about 931.8729918045.

The spelling of 809226646 in words is "eight hundred nine million, two hundred twenty-six thousand, six hundred forty-six".