144449444 has 6 divisors (see below), whose sum is σ = 252786534. Its totient is φ = 72224720.

The previous prime is 144449441. The next prime is 144449447. The reversal of 144449444 is 444944441.

It is an interprime number because it is at equal distance from previous prime (144449441) and next prime (144449447).

It can be written as a sum of positive squares in only one way, i.e., 114746944 + 29702500 = 10712^2 + 5450^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144449398 and 144449407.

It is not an unprimeable number, because it can be changed into a prime (144449441) 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, 18056177 + ... + 18056184.

It is an arithmetic number, because the mean of its divisors is an integer number (42131089).

Almost surely, 2^144449444 is an apocalyptic number.

It is an amenable number.

144449444 is a deficient number, since it is larger than the sum of its proper divisors (108337090).

144449444 is a wasteful number, since it uses less digits than its factorization.

144449444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36112365 (or 36112363 counting only the distinct ones).

The product of its digits is 147456, while the sum is 38.

The square root of 144449444 is about 12018.7122438305. The cubic root of 144449444 is about 524.6930256829.

The spelling of 144449444 in words is "one hundred forty-four million, four hundred forty-nine thousand, four hundred forty-four".