809113408 has 14 divisors (see below), whose sum is σ = 1605584546. Its totient is φ = 404556672.

The previous prime is 809113391. The next prime is 809113429. The reversal of 809113408 is 804311908.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 693163584 + 115949824 = 26328^2 + 10768^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321135 + ... + 6321262.

Almost surely, 2^809113408 is an apocalyptic number.

It is an amenable number.

809113408 is a deficient number, since it is larger than the sum of its proper divisors (796471138).

809113408 is a wasteful number, since it uses less digits than its factorization.

809113408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12642409 (or 12642399 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 809113408 is about 28444.9188432662. The cubic root of 809113408 is about 931.8295229952.

The spelling of 809113408 in words is "eight hundred nine million, one hundred thirteen thousand, four hundred eight".