144487444 has 24 divisors (see below), whose sum is σ = 260055936. Its totient is φ = 70200000.

The previous prime is 144487423. The next prime is 144487451. The reversal of 144487444 is 444784441.

It is a junction number, because it is equal to n+sod(n) for n = 144487397 and 144487406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42819 + ... + 46069.

It is an arithmetic number, because the mean of its divisors is an integer number (10835664).

Almost surely, 2^144487444 is an apocalyptic number.

It is an amenable number.

144487444 is a deficient number, since it is larger than the sum of its proper divisors (115568492).

144487444 is a wasteful number, since it uses less digits than its factorization.

144487444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567 (or 3565 counting only the distinct ones).

The product of its digits is 229376, while the sum is 40.

The square root of 144487444 is about 12020.2930080760. The cubic root of 144487444 is about 524.7390315987.

It can be divided in two parts, 1444 and 87444, that added together give a palindrome (88888).

The spelling of 144487444 in words is "one hundred forty-four million, four hundred eighty-seven thousand, four hundred forty-four".