89145173 has 12 divisors (see below), whose sum is σ = 98686980. Its totient is φ = 80047872.

The previous prime is 89145167. The next prime is 89145187. The reversal of 89145173 is 37154198.

It can be written as a sum of positive squares in 6 ways, for example, as 5276209 + 83868964 = 2297^2 + 9158^2 .

It is not a de Polignac number, because 89145173 - 2⁴ = 89145157 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89145103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15293 + ... + 20301.

It is an arithmetic number, because the mean of its divisors is an integer number (8223915).

Almost surely, 2^89145173 is an apocalyptic number.

It is an amenable number.

89145173 is a deficient number, since it is larger than the sum of its proper divisors (9541807).

89145173 is a wasteful number, since it uses less digits than its factorization.

89145173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096 (or 5059 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 89145173 is about 9441.6721506309. The cubic root of 89145173 is about 446.7171344055.

It can be divided in two parts, 891 and 45173, that added together give a palindrome (46064).

The spelling of 89145173 in words is "eighty-nine million, one hundred forty-five thousand, one hundred seventy-three".