144001271989 has 4 divisors (see below), whose sum is σ = 144002045740. Its totient is φ = 144000498240.

The previous prime is 144001271971. The next prime is 144001272001. The reversal of 144001271989 is 989172100441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22926502225 + 121074769764 = 151415^2 + 347958^2 .

It is a cyclic number.

It is not a de Polignac number, because 144001271989 - 2¹¹ = 144001269941 is a prime.

It is a super-2 number, since 2×144001271989² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144001271489) 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, 80479 + ... + 542659.

It is an arithmetic number, because the mean of its divisors is an integer number (36000511435).

Almost surely, 2^144001271989 is an apocalyptic number.

It is an amenable number.

144001271989 is a deficient number, since it is larger than the sum of its proper divisors (773751).

144001271989 is an equidigital number, since it uses as much as digits as its factorization.

144001271989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773750.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 144001271989 in words is "one hundred forty-four billion, one million, two hundred seventy-one thousand, nine hundred eighty-nine".