84489845 has 16 divisors (see below), whose sum is σ = 110835648. Its totient is φ = 61319040.

The previous prime is 84489841. The next prime is 84489857. The reversal of 84489845 is 54898448.

It is not a de Polignac number, because 84489845 - 2² = 84489841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84489793 and 84489802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84489841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30977 + ... + 33593.

It is an arithmetic number, because the mean of its divisors is an integer number (6927228).

Almost surely, 2^84489845 is an apocalyptic number.

It is an amenable number.

84489845 is a deficient number, since it is larger than the sum of its proper divisors (26345803).

84489845 is a wasteful number, since it uses less digits than its factorization.

84489845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220.

The product of its digits is 1474560, while the sum is 50.

The square root of 84489845 is about 9191.8357796471. The cubic root of 84489845 is about 438.8015683307.

The spelling of 84489845 in words is "eighty-four million, four hundred eighty-nine thousand, eight hundred forty-five".