845989243 has 8 divisors (see below), whose sum is σ = 963023616. Its totient is φ = 735642600.

The previous prime is 845989229. The next prime is 845989271. The reversal of 845989243 is 342989548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-845989243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (845987243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671663 + ... + 1672168.

It is an arithmetic number, because the mean of its divisors is an integer number (120377952).

Almost surely, 2^845989243 is an apocalyptic number.

845989243 is a deficient number, since it is larger than the sum of its proper divisors (117034373).

845989243 is a wasteful number, since it uses less digits than its factorization.

845989243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343865.

The product of its digits is 2488320, while the sum is 52.

The square root of 845989243 is about 29085.8942272711. The cubic root of 845989243 is about 945.7759806832.

The spelling of 845989243 in words is "eight hundred forty-five million, nine hundred eighty-nine thousand, two hundred forty-three".