144895989 has 24 divisors (see below), whose sum is σ = 226823520. Its totient is φ = 82029024.

The previous prime is 144895987. The next prime is 144896023. The reversal of 144895989 is 989598441.

It is not a de Polignac number, because 144895989 - 2¹ = 144895987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144895987) 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 23 ways as a sum of consecutive naturals, for example, 11502 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (9450980).

Almost surely, 2^144895989 is an apocalyptic number.

It is an amenable number.

144895989 is a deficient number, since it is larger than the sum of its proper divisors (81927531).

144895989 is a wasteful number, since it uses less digits than its factorization.

144895989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169 (or 9162 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The square root of 144895989 is about 12037.2749823205. The cubic root of 144895989 is about 525.2331408964.

The spelling of 144895989 in words is "one hundred forty-four million, eight hundred ninety-five thousand, nine hundred eighty-nine".