845807473 has 10 divisors (see below), whose sum is σ = 986719474. Its totient is φ = 724975776.

The previous prime is 845807447. The next prime is 845807507. The reversal of 845807473 is 374708548.

It can be written as a sum of positive squares in only one way, i.e., 448084224 + 397723249 = 21168^2 + 19943^2 .

It is not a de Polignac number, because 845807473 - 2²¹ = 843710321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845804473) 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, 173736 + ... + 178537.

Almost surely, 2^845807473 is an apocalyptic number.

It is an amenable number.

845807473 is a deficient number, since it is larger than the sum of its proper divisors (140912001).

845807473 is an frugal number, since it uses more digits than its factorization.

845807473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352301 (or 352280 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 46.

The square root of 845807473 is about 29082.7693488774. The cubic root of 845807473 is about 945.7082390756.

The spelling of 845807473 in words is "eight hundred forty-five million, eight hundred seven thousand, four hundred seventy-three".