806471091 has 24 divisors (see below), whose sum is σ = 1178708544. Its totient is φ = 531301680.

The previous prime is 806471089. The next prime is 806471117. The reversal of 806471091 is 190174608.

806471091 is a `hidden beast` number, since 8 + 0 + 647 + 1 + 0 + 9 + 1 = 666.

It is not a de Polignac number, because 806471091 - 2¹ = 806471089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (806471051) 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 23 ways as a sum of consecutive naturals, for example, 525996 + ... + 527526.

It is an arithmetic number, because the mean of its divisors is an integer number (49112856).

Almost surely, 2^806471091 is an apocalyptic number.

806471091 is a deficient number, since it is larger than the sum of its proper divisors (372237453).

806471091 is a wasteful number, since it uses less digits than its factorization.

806471091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 806471091 is about 28398.4346575652. The cubic root of 806471091 is about 930.8140600243.

The spelling of 806471091 in words is "eight hundred six million, four hundred seventy-one thousand, ninety-one".