144441641 has 4 divisors (see below), whose sum is σ = 144663492. Its totient is φ = 144219792.

The previous prime is 144441637. The next prime is 144441653. The reversal of 144441641 is 146144441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146144441 = 1823 ⋅80167.

It can be written as a sum of positive squares in 2 ways, for example, as 10368400 + 134073241 = 3220^2 + 11579^2 .

It is a cyclic number.

It is not a de Polignac number, because 144441641 - 2² = 144441637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144441691) 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, 109946 + ... + 111251.

It is an arithmetic number, because the mean of its divisors is an integer number (36165873).

Almost surely, 2^144441641 is an apocalyptic number.

It is an amenable number.

144441641 is a deficient number, since it is larger than the sum of its proper divisors (221851).

144441641 is an equidigital number, since it uses as much as digits as its factorization.

144441641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221850.

The product of its digits is 6144, while the sum is 29.

The square root of 144441641 is about 12018.3876206420. The cubic root of 144441641 is about 524.6835777329.

The spelling of 144441641 in words is "one hundred forty-four million, four hundred forty-one thousand, six hundred forty-one".