144393569 has 2 divisors, whose sum is σ = 144393570. Its totient is φ = 144393568.

The previous prime is 144393553. The next prime is 144393589. The reversal of 144393569 is 965393441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127690000 + 16703569 = 11300^2 + 4087^2 .

It is a cyclic number.

It is not a de Polignac number, because 144393569 - 2⁴ = 144393553 is a prime.

It is a super-2 number, since 2×144393569² = 41699005537115522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144393589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72196784 + 72196785.

It is an arithmetic number, because the mean of its divisors is an integer number (72196785).

Almost surely, 2^144393569 is an apocalyptic number.

It is an amenable number.

144393569 is a deficient number, since it is larger than the sum of its proper divisors (1).

144393569 is an equidigital number, since it uses as much as digits as its factorization.

144393569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 44.

The square root of 144393569 is about 12016.3875187179. The cubic root of 144393569 is about 524.6253641701.

The spelling of 144393569 in words is "one hundred forty-four million, three hundred ninety-three thousand, five hundred sixty-nine".