845420223 has 16 divisors (see below), whose sum is σ = 1180048896. Its totient is φ = 537361440.

The previous prime is 845420221. The next prime is 845420239. The reversal of 845420223 is 322024548.

It is not a de Polignac number, because 845420223 - 2¹ = 845420221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845420221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761 + ... + 41157.

It is an arithmetic number, because the mean of its divisors is an integer number (73753056).

Almost surely, 2^845420223 is an apocalyptic number.

845420223 is a deficient number, since it is larger than the sum of its proper divisors (334628673).

845420223 is a wasteful number, since it uses less digits than its factorization.

845420223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39734.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 845420223 is about 29076.1108644193. The cubic root of 845420223 is about 945.5638873040.

The spelling of 845420223 in words is "eight hundred forty-five million, four hundred twenty thousand, two hundred twenty-three".