144739 has 16 divisors (see below), whose sum is σ = 184320. Its totient is φ = 110880.

The previous prime is 144737. The next prime is 144751. The reversal of 144739 is 937441.

144739 = 32² + 33² + ... + 77².

144739 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 144739 - 2¹ = 144737 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (144731) 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, 4654 + ... + 4684.

It is an arithmetic number, because the mean of its divisors is an integer number (11520).

2¹⁴⁴⁷³⁹ is an apocalyptic number.

144739 is a deficient number, since it is larger than the sum of its proper divisors (39581).

144739 is a wasteful number, since it uses less digits than its factorization.

144739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90.

The product of its digits is 3024, while the sum is 28.

The square root of 144739 is about 380.4457911451. The cubic root of 144739 is about 52.5043382658.

It can be divided in two parts, 14 and 4739, that added together give a triangular number (4753 = T₉₇).

The spelling of 144739 in words is "one hundred forty-four thousand, seven hundred thirty-nine".