144611689 has 2 divisors, whose sum is σ = 144611690. Its totient is φ = 144611688.

The previous prime is 144611681. The next prime is 144611693. The reversal of 144611689 is 986116441.

144611689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127306089 + 17305600 = 11283^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 144611689 - 2³ = 144611681 is a prime.

It is not a weakly prime, because it can be changed into another prime (144611681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72305844 + 72305845.

It is an arithmetic number, because the mean of its divisors is an integer number (72305845).

Almost surely, 2^144611689 is an apocalyptic number.

It is an amenable number.

144611689 is a deficient number, since it is larger than the sum of its proper divisors (1).

144611689 is an equidigital number, since it uses as much as digits as its factorization.

144611689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 144611689 is about 12025.4600327805. The cubic root of 144611689 is about 524.8893965039.

The spelling of 144611689 in words is "one hundred forty-four million, six hundred eleven thousand, six hundred eighty-nine".