144440445 has 32 divisors (see below), whose sum is σ = 240307200. Its totient is φ = 73995264.

The previous prime is 144440441. The next prime is 144440453. The reversal of 144440445 is 544044441.

It is not a de Polignac number, because 144440445 - 2² = 144440441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144440441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96261 + ... + 97749.

It is an arithmetic number, because the mean of its divisors is an integer number (7509600).

Almost surely, 2^144440445 is an apocalyptic number.

144440445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144440445 is a deficient number, since it is larger than the sum of its proper divisors (95866755).

144440445 is a wasteful number, since it uses less digits than its factorization.

144440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749.

The product of its (nonzero) digits is 20480, while the sum is 30.

The square root of 144440445 is about 12018.3378634485. The cubic root of 144440445 is about 524.6821295741.

Adding to 144440445 its reverse (544044441), we get a palindrome (688484886).

The spelling of 144440445 in words is "one hundred forty-four million, four hundred forty thousand, four hundred forty-five".