144739239 has 8 divisors (see below), whose sum is σ = 194101872. Its totient is φ = 95934720.

The previous prime is 144739223. The next prime is 144739289. The reversal of 144739239 is 932937441.

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

It is not a de Polignac number, because 144739239 - 2⁴ = 144739223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144739239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144739289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138922 + ... + 139959.

It is an arithmetic number, because the mean of its divisors is an integer number (24262734).

Almost surely, 2^144739239 is an apocalyptic number.

144739239 is a deficient number, since it is larger than the sum of its proper divisors (49362633).

144739239 is a wasteful number, since it uses less digits than its factorization.

144739239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279057.

The product of its digits is 163296, while the sum is 42.

The square root of 144739239 is about 12030.7621953058. The cubic root of 144739239 is about 525.0436716506.

The spelling of 144739239 in words is "one hundred forty-four million, seven hundred thirty-nine thousand, two hundred thirty-nine".