144838641 has 4 divisors (see below), whose sum is σ = 193118192. Its totient is φ = 96559092.

The previous prime is 144838633. The next prime is 144838669. The reversal of 144838641 is 146838441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 144838641 - 2³ = 144838633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144838641.

It is not an unprimeable number, because it can be changed into a prime (144838621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24139771 + ... + 24139776.

It is an arithmetic number, because the mean of its divisors is an integer number (48279548).

Almost surely, 2^144838641 is an apocalyptic number.

It is an amenable number.

144838641 is a deficient number, since it is larger than the sum of its proper divisors (48279551).

144838641 is an equidigital number, since it uses as much as digits as its factorization.

144838641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48279550.

The product of its digits is 73728, while the sum is 39.

The square root of 144838641 is about 12034.8926459691. The cubic root of 144838641 is about 525.1638382076.

The spelling of 144838641 in words is "one hundred forty-four million, eight hundred thirty-eight thousand, six hundred forty-one".