144489 has 4 divisors (see below), whose sum is σ = 192656. Its totient is φ = 96324.

The previous prime is 144481. The next prime is 144497. The reversal of 144489 is 984441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (144481) and next prime (144497).

It is not a de Polignac number, because 144489 - 2³ = 144481 is a prime.

It is a super-2 number, since 2×144489² = 41754142242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10 and base 16.

It is not an unprimeable number, because it can be changed into a prime (144481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24079 + ... + 24084.

It is an arithmetic number, because the mean of its divisors is an integer number (48164).

2¹⁴⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

144489 is a deficient number, since it is larger than the sum of its proper divisors (48167).

144489 is an equidigital number, since it uses as much as digits as its factorization.

144489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48166.

The product of its digits is 4608, while the sum is 30.

The square root of 144489 is about 380.1170872244. The cubic root of 144489 is about 52.4740915248.

The spelling of 144489 in words is "one hundred forty-four thousand, four hundred eighty-nine".