144492289 has 4 divisors (see below), whose sum is σ = 148397524. Its totient is φ = 140587056.

The previous prime is 144492287. The next prime is 144492311. The reversal of 144492289 is 982294441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982294441 = 41 ⋅23958401.

It can be written as a sum of positive squares in 2 ways, for example, as 77792400 + 66699889 = 8820^2 + 8167^2 .

It is a cyclic number.

It is not a de Polignac number, because 144492289 - 2¹ = 144492287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144492287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952562 + ... + 1952635.

It is an arithmetic number, because the mean of its divisors is an integer number (37099381).

Almost surely, 2^144492289 is an apocalyptic number.

It is an amenable number.

144492289 is a deficient number, since it is larger than the sum of its proper divisors (3905235).

144492289 is an equidigital number, since it uses as much as digits as its factorization.

144492289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905234.

The product of its digits is 165888, while the sum is 43.

The square root of 144492289 is about 12020.4945405753. The cubic root of 144492289 is about 524.7448967731.

The spelling of 144492289 in words is "one hundred forty-four million, four hundred ninety-two thousand, two hundred eighty-nine".