144428589 has 10 divisors (see below), whose sum is σ = 215751470. Its totient is φ = 96285672.

The previous prime is 144428587. The next prime is 144428611. The reversal of 144428589 is 985824441.

144428589 is a `hidden beast` number, since 1 + 4 + 44 + 28 + 589 = 666.

It can be written as a sum of positive squares in only one way, i.e., 83119689 + 61308900 = 9117^2 + 7830^2 .

It is not a de Polignac number, because 144428589 - 2¹ = 144428587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144428587) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 891454 + ... + 891615.

It is an arithmetic number, because the mean of its divisors is an integer number (21575147).

Almost surely, 2^144428589 is an apocalyptic number.

It is an amenable number.

144428589 is a deficient number, since it is larger than the sum of its proper divisors (71322881).

144428589 is an equidigital number, since it uses as much as digits as its factorization.

144428589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783081 (or 1783072 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 144428589 is about 12017.8446070833. The cubic root of 144428589 is about 524.6677734807.

The spelling of 144428589 in words is "one hundred forty-four million, four hundred twenty-eight thousand, five hundred eighty-nine".