989145 has 32 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 495360.

The previous prime is 989123. The next prime is 989171. The reversal of 989145 is 541989.

It is not a de Polignac number, because 989145 - 2⁶ = 989081 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989145.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2080 + ... + 2510.

It is an arithmetic number, because the mean of its divisors is an integer number (58320).

2⁹⁸⁹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

989145 is a deficient number, since it is larger than the sum of its proper divisors (877095).

989145 is a wasteful number, since it uses less digits than its factorization.

989145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 456 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 989145 is about 994.5576906344. The cubic root of 989145 is about 99.6368494801.

The spelling of 989145 in words is "nine hundred eighty-nine thousand, one hundred forty-five".