144866889 has 24 divisors (see below), whose sum is σ = 214344000. Its totient is φ = 94252320.

The previous prime is 144866879. The next prime is 144866893. The reversal of 144866889 is 988668441.

It is not a de Polignac number, because 144866889 - 2⁹ = 144866377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144866819) 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 in 23 ways as a sum of consecutive naturals, for example, 78204 + ... + 80034.

It is an arithmetic number, because the mean of its divisors is an integer number (8931000).

Almost surely, 2^144866889 is an apocalyptic number.

It is an amenable number.

144866889 is a deficient number, since it is larger than the sum of its proper divisors (69477111).

144866889 is a wasteful number, since it uses less digits than its factorization.

144866889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2042 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 144866889 is about 12036.0661762887. The cubic root of 144866889 is about 525.1979770343.

The spelling of 144866889 in words is "one hundred forty-four million, eight hundred sixty-six thousand, eight hundred eighty-nine".