144447229 has 2 divisors, whose sum is σ = 144447230. Its totient is φ = 144447228.

The previous prime is 144447161. The next prime is 144447239. The reversal of 144447229 is 922744441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90820900 + 53626329 = 9530^2 + 7323^2 .

It is an emirp because it is prime and its reverse (922744441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144447229 - 2¹⁷ = 144316157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144447239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72223614 + 72223615.

It is an arithmetic number, because the mean of its divisors is an integer number (72223615).

Almost surely, 2^144447229 is an apocalyptic number.

It is an amenable number.

144447229 is a deficient number, since it is larger than the sum of its proper divisors (1).

144447229 is an equidigital number, since it uses as much as digits as its factorization.

144447229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 144447229 is about 12018.6200955018. The cubic root of 144447229 is about 524.6903437735.

The spelling of 144447229 in words is "one hundred forty-four million, four hundred forty-seven thousand, two hundred twenty-nine".