144456789 has 4 divisors (see below), whose sum is σ = 192609056. Its totient is φ = 96304524.

The previous prime is 144456749. The next prime is 144456811. The reversal of 144456789 is 987654441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 144456789 - 2¹¹ = 144454741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144456749) 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 3 ways as a sum of consecutive naturals, for example, 24076129 + ... + 24076134.

It is an arithmetic number, because the mean of its divisors is an integer number (48152264).

Almost surely, 2^144456789 is an apocalyptic number.

It is an amenable number.

144456789 is a deficient number, since it is larger than the sum of its proper divisors (48152267).

144456789 is an equidigital number, since it uses as much as digits as its factorization.

144456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48152266.

The product of its digits is 967680, while the sum is 48.

The square root of 144456789 is about 12019.0178051287. The cubic root of 144456789 is about 524.7019187712.

The spelling of 144456789 in words is "one hundred forty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".