144391 has 8 divisors (see below), whose sum is σ = 161280. Its totient is φ = 128352.

The previous prime is 144383. The next prime is 144407. The reversal of 144391 is 193441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144391 - 2³ = 144383 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 (144311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (20160).

2¹⁴⁴³⁹¹ is an apocalyptic number.

144391 is a deficient number, since it is larger than the sum of its proper divisors (16889).

144391 is a wasteful number, since it uses less digits than its factorization.

144391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its digits is 432, while the sum is 22.

The square root of 144391 is about 379.9881577102. The cubic root of 144391 is about 52.4622252835.

It can be divided in two parts, 144 and 391, that added together give a palindrome (535).

The spelling of 144391 in words is "one hundred forty-four thousand, three hundred ninety-one".