144771229 has 2 divisors, whose sum is σ = 144771230. Its totient is φ = 144771228.

The previous prime is 144771217. The next prime is 144771251. The reversal of 144771229 is 922177441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144648729 + 122500 = 12027^2 + 350^2 .

It is a cyclic number.

It is not a de Polignac number, because 144771229 - 2¹⁷ = 144640157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144771329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72385614 + 72385615.

It is an arithmetic number, because the mean of its divisors is an integer number (72385615).

Almost surely, 2^144771229 is an apocalyptic number.

It is an amenable number.

144771229 is a deficient number, since it is larger than the sum of its proper divisors (1).

144771229 is an equidigital number, since it uses as much as digits as its factorization.

144771229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 144771229 is about 12032.0916303027. The cubic root of 144771229 is about 525.0823501962.

The spelling of 144771229 in words is "one hundred forty-four million, seven hundred seventy-one thousand, two hundred twenty-nine".