89445 has 16 divisors (see below), whose sum is σ = 146880. Its totient is φ = 46464.

The previous prime is 89443. The next prime is 89449. The reversal of 89445 is 54498.

It is not a de Polignac number, because 89445 - 2¹ = 89443 is a prime.

89445 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89445.

It is not an unprimeable number, because it can be changed into a prime (89443) 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, 961 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (9180).

2⁸⁹⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

89445 is a deficient number, since it is larger than the sum of its proper divisors (57435).

89445 is a wasteful number, since it uses less digits than its factorization.

89445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164.

The product of its digits is 5760, while the sum is 30.

The square root of 89445 is about 299.0735695444. The cubic root of 89445 is about 44.7217396968.

It can be divided in two parts, 894 and 45, that added together give a palindrome (939).

The spelling of 89445 in words is "eighty-nine thousand, four hundred forty-five".