845975423 has 4 divisors (see below), whose sum is σ = 847120920. Its totient is φ = 844829928.

The previous prime is 845975401. The next prime is 845975447. The reversal of 845975423 is 324579548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 845975423 - 2¹⁴ = 845959039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845975483) 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 3 ways as a sum of consecutive naturals, for example, 571640 + ... + 573117.

It is an arithmetic number, because the mean of its divisors is an integer number (211780230).

Almost surely, 2^845975423 is an apocalyptic number.

845975423 is a deficient number, since it is larger than the sum of its proper divisors (1145497).

845975423 is a wasteful number, since it uses less digits than its factorization.

845975423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145496.

The product of its digits is 1209600, while the sum is 47.

The square root of 845975423 is about 29085.6566540967. The cubic root of 845975423 is about 945.7708306196.

The spelling of 845975423 in words is "eight hundred forty-five million, nine hundred seventy-five thousand, four hundred twenty-three".