144703289 has 4 divisors (see below), whose sum is σ = 145625124. Its totient is φ = 143781456.

The previous prime is 144703283. The next prime is 144703291. The reversal of 144703289 is 982307441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982307441 = 10613 ⋅92557.

It can be written as a sum of positive squares in 2 ways, for example, as 34810000 + 109893289 = 5900^2 + 10483^2 .

It is a cyclic number.

It is not a de Polignac number, because 144703289 - 2⁸ = 144703033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144703283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460682 + ... + 460995.

It is an arithmetic number, because the mean of its divisors is an integer number (36406281).

Almost surely, 2^144703289 is an apocalyptic number.

It is an amenable number.

144703289 is a deficient number, since it is larger than the sum of its proper divisors (921835).

144703289 is an equidigital number, since it uses as much as digits as its factorization.

144703289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921834.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 144703289 is about 12029.2680159684. The cubic root of 144703289 is about 525.0001983370. Note that the first 3 decimals are identical.

The spelling of 144703289 in words is "one hundred forty-four million, seven hundred three thousand, two hundred eighty-nine".