144881439 has 8 divisors (see below), whose sum is σ = 201574272. Its totient is φ = 92388120.

The previous prime is 144881411. The next prime is 144881449. The reversal of 144881439 is 934188441.

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

It is not a de Polignac number, because 144881439 - 2⁹ = 144880927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144881439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144881449) 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, 1049797 + ... + 1049934.

It is an arithmetic number, because the mean of its divisors is an integer number (25196784).

Almost surely, 2^144881439 is an apocalyptic number.

144881439 is a deficient number, since it is larger than the sum of its proper divisors (56692833).

144881439 is a wasteful number, since it uses less digits than its factorization.

144881439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099757.

The product of its digits is 110592, while the sum is 42.

The square root of 144881439 is about 12036.6705944792. The cubic root of 144881439 is about 525.2155595539.

The spelling of 144881439 in words is "one hundred forty-four million, eight hundred eighty-one thousand, four hundred thirty-nine".