144222239 has 24 divisors (see below), whose sum is σ = 172504800. Its totient is φ = 120516480.

The previous prime is 144222193. The next prime is 144222251. The reversal of 144222239 is 932222441.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-144222239 is a prime.

It is a Duffinian number.

Its product of digits (6912) is a multiple of the sum of its prime factors (256).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144222289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1276247 + ... + 1276359.

It is an arithmetic number, because the mean of its divisors is an integer number (7187700).

Almost surely, 2^144222239 is an apocalyptic number.

144222239 is a deficient number, since it is larger than the sum of its proper divisors (28282561).

144222239 is an frugal number, since it uses more digits than its factorization.

144222239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 181 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 144222239 is about 12009.2563883031. The cubic root of 144222239 is about 524.4177842012.

It can be divided in two parts, 14422 and 2239, that added together give a palindrome (16661).

The spelling of 144222239 in words is "one hundred forty-four million, two hundred twenty-two thousand, two hundred thirty-nine".