847066491 has 10 divisors (see below), whose sum is σ = 1265371052. Its totient is φ = 564710940.

The previous prime is 847066487. The next prime is 847066499. The reversal of 847066491 is 194660748.

It is not a de Polignac number, because 847066491 - 2² = 847066487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (847066499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5228725 + ... + 5228886.

Almost surely, 2^847066491 is an apocalyptic number.

847066491 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

847066491 is a deficient number, since it is larger than the sum of its proper divisors (418304561).

847066491 is a wasteful number, since it uses less digits than its factorization.

847066491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457623 (or 10457614 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 847066491 is about 29104.4067281915. The cubic root of 847066491 is about 946.1772478585.

The spelling of 847066491 in words is "eight hundred forty-seven million, sixty-six thousand, four hundred ninety-one".