144389539 has 16 divisors (see below), whose sum is σ = 167827968. Its totient is φ = 121669632.

The previous prime is 144389527. The next prime is 144389563. The reversal of 144389539 is 935983441.

It is a happy number.

144389539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144389539 - 2⁷ = 144389411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144389519) 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, 148834 + ... + 149800.

It is an arithmetic number, because the mean of its divisors is an integer number (10489248).

Almost surely, 2^144389539 is an apocalyptic number.

144389539 is a deficient number, since it is larger than the sum of its proper divisors (23438429).

144389539 is an equidigital number, since it uses as much as digits as its factorization.

144389539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314.

The product of its digits is 466560, while the sum is 46.

The square root of 144389539 is about 12016.2198298799. The cubic root of 144389539 is about 524.6204833898.

The spelling of 144389539 in words is "one hundred forty-four million, three hundred eighty-nine thousand, five hundred thirty-nine".