809081456 has 10 divisors (see below), whose sum is σ = 1567595352. Its totient is φ = 404540720.

The previous prime is 809081447. The next prime is 809081461. The reversal of 809081456 is 654180908.

It is a super-2 number, since 2×809081456² = 1309225604886159872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25283780 + ... + 25283811.

Almost surely, 2^809081456 is an apocalyptic number.

It is an amenable number.

809081456 is a deficient number, since it is larger than the sum of its proper divisors (758513896).

809081456 is a wasteful number, since it uses less digits than its factorization.

809081456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50567599 (or 50567593 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 809081456 is about 28444.3571908384. The cubic root of 809081456 is about 931.8172568083.

The spelling of 809081456 in words is "eight hundred nine million, eighty-one thousand, four hundred fifty-six".