144330209 has 8 divisors (see below), whose sum is σ = 150276840. Its totient is φ = 138499200.

The previous prime is 144330169. The next prime is 144330211. The reversal of 144330209 is 902033441.

It can be written as a sum of positive squares in 4 ways, for example, as 28121809 + 116208400 = 5303^2 + 10780^2 .

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 144330209 - 2¹² = 144326113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144330239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26354 + ... + 31355.

It is an arithmetic number, because the mean of its divisors is an integer number (18784605).

Almost surely, 2^144330209 is an apocalyptic number.

It is an amenable number.

144330209 is a deficient number, since it is larger than the sum of its proper divisors (5946631).

144330209 is an equidigital number, since it uses as much as digits as its factorization.

144330209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57811.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 144330209 is about 12013.7508297784. The cubic root of 144330209 is about 524.5486176168.

The spelling of 144330209 in words is "one hundred forty-four million, three hundred thirty thousand, two hundred nine".