144424444 has 24 divisors (see below), whose sum is σ = 259379120. Its totient is φ = 70326144.

The previous prime is 144424433. The next prime is 144424451. The reversal of 144424444 is 444424441.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69322 + ... + 71374.

Almost surely, 2^144424444 is an apocalyptic number.

It is an amenable number.

144424444 is a deficient number, since it is larger than the sum of its proper divisors (114954676).

144424444 is a wasteful number, since it uses less digits than its factorization.

144424444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509 (or 2507 counting only the distinct ones).

The product of its digits is 32768, while the sum is 31.

The square root of 144424444 is about 12017.6721539573. The cubic root of 144424444 is about 524.6627542327.

Adding to 144424444 its reverse (444424441), we get a palindrome (588848885).

The spelling of 144424444 in words is "one hundred forty-four million, four hundred twenty-four thousand, four hundred forty-four".