144224491 has 2 divisors, whose sum is σ = 144224492. Its totient is φ = 144224490.

The previous prime is 144224477. The next prime is 144224527. The reversal of 144224491 is 194422441.

It is a weak prime.

It is an emirp because it is prime and its reverse (194422441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144224491 - 2⁷ = 144224363 is a prime.

It is not a weakly prime, because it can be changed into another prime (144224471) 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 as a sum of consecutive naturals, namely, 72112245 + 72112246.

It is an arithmetic number, because the mean of its divisors is an integer number (72112246).

Almost surely, 2^144224491 is an apocalyptic number.

144224491 is a deficient number, since it is larger than the sum of its proper divisors (1).

144224491 is an equidigital number, since it uses as much as digits as its factorization.

144224491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 144224491 is about 12009.3501489464. The cubic root of 144224491 is about 524.4205137449.

The spelling of 144224491 in words is "one hundred forty-four million, two hundred twenty-four thousand, four hundred ninety-one".