144145444 has 6 divisors (see below), whose sum is σ = 252254534. Its totient is φ = 72072720.

The previous prime is 144145427. The next prime is 144145447. The reversal of 144145444 is 444541441.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 30935844 = 10640^2 + 5562^2 .

It is not an unprimeable number, because it can be changed into a prime (144145447) 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, 18018177 + ... + 18018184.

Almost surely, 2^144145444 is an apocalyptic number.

It is an amenable number.

144145444 is a deficient number, since it is larger than the sum of its proper divisors (108109090).

144145444 is a wasteful number, since it uses less digits than its factorization.

144145444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36036365 (or 36036363 counting only the distinct ones).

The product of its digits is 20480, while the sum is 31.

The square root of 144145444 is about 12006.0586372048. The cubic root of 144145444 is about 524.3246875696.

Adding to 144145444 its reverse (444541441), we get a palindrome (588686885).

The spelling of 144145444 in words is "one hundred forty-four million, one hundred forty-five thousand, four hundred forty-four".