144434440 has 16 divisors (see below), whose sum is σ = 324977580. Its totient is φ = 57773760.

The previous prime is 144434429. The next prime is 144434441. The reversal of 144434440 is 44434441.

It can be written as a sum of positive squares in 2 ways, for example, as 144432324 + 2116 = 12018^2 + 46^2 .

It is a super-2 number, since 2×144434440² = 41722614916227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144434399 and 144434408.

It is not an unprimeable number, because it can be changed into a prime (144434441) 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, 1805391 + ... + 1805470.

Almost surely, 2^144434440 is an apocalyptic number.

144434440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144434440 is an abundant number, since it is smaller than the sum of its proper divisors (180543140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144434440 is a wasteful number, since it uses less digits than its factorization.

144434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610872 (or 3610868 counting only the distinct ones).

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

The square root of 144434440 is about 12018.0880342923. The cubic root of 144434440 is about 524.6748583885.

Adding to 144434440 its reverse (44434441), we get a palindrome (188868881).

Subtracting from 144434440 its reverse (44434441), we obtain a palindrome (99999999).

The spelling of 144434440 in words is "one hundred forty-four million, four hundred thirty-four thousand, four hundred forty".