144408269 has 2 divisors, whose sum is σ = 144408270. Its totient is φ = 144408268.

The previous prime is 144408247. The next prime is 144408281. The reversal of 144408269 is 962804441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144312169 + 96100 = 12013^2 + 310^2 .

It is an emirp because it is prime and its reverse (962804441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144408269 is a prime.

It is a super-2 number, since 2×144408269² = 41707496311152722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144408239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72204134 + 72204135.

It is an arithmetic number, because the mean of its divisors is an integer number (72204135).

Almost surely, 2^144408269 is an apocalyptic number.

It is an amenable number.

144408269 is a deficient number, since it is larger than the sum of its proper divisors (1).

144408269 is an equidigital number, since it uses as much as digits as its factorization.

144408269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 144408269 is about 12016.9991678455. Note that the first 3 decimals coincide. The cubic root of 144408269 is about 524.6431667431.

The spelling of 144408269 in words is "one hundred forty-four million, four hundred eight thousand, two hundred sixty-nine".