144403444 has 12 divisors (see below), whose sum is σ = 256989600. Its totient is φ = 70977848.

The previous prime is 144403433. The next prime is 144403447. The reversal of 144403444 is 444304441.

It is a super-2 number, since 2×144403444² = 41704709278122272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144403447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305704 + ... + 306175.

It is an arithmetic number, because the mean of its divisors is an integer number (21415800).

Almost surely, 2^144403444 is an apocalyptic number.

It is an amenable number.

144403444 is a deficient number, since it is larger than the sum of its proper divisors (112586156).

144403444 is a wasteful number, since it uses less digits than its factorization.

144403444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611942 (or 611940 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 144403444 is about 12016.7984088941. The cubic root of 144403444 is about 524.6373235148.

Adding to 144403444 its reverse (444304441), we get a palindrome (588707885).

The spelling of 144403444 in words is "one hundred forty-four million, four hundred three thousand, four hundred forty-four".