809449400882 has 4 divisors (see below), whose sum is σ = 1214174101326. Its totient is φ = 404724700440.

The previous prime is 809449400867. The next prime is 809449400911. The reversal of 809449400882 is 288004944908.

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

It can be written as a sum of positive squares in only one way, i.e., 604103572081 + 205345828801 = 777241^2 + 453151^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202362350219 + ... + 202362350222.

Almost surely, 2^809449400882 is an apocalyptic number.

809449400882 is a deficient number, since it is larger than the sum of its proper divisors (404724700444).

809449400882 is a wasteful number, since it uses less digits than its factorization.

809449400882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404724700443.

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 809449400882 in words is "eight hundred nine billion, four hundred forty-nine million, four hundred thousand, eight hundred eighty-two".