144899689 has 8 divisors (see below), whose sum is σ = 163523520. Its totient is φ = 127184400.

The previous prime is 144899663. The next prime is 144899707. The reversal of 144899689 is 986998441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144899689 - 2¹³ = 144891497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144899639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226797 + ... + 227434.

It is an arithmetic number, because the mean of its divisors is an integer number (20440440).

Almost surely, 2^144899689 is an apocalyptic number.

It is an amenable number.

144899689 is a deficient number, since it is larger than the sum of its proper divisors (18623831).

144899689 is a wasteful number, since it uses less digits than its factorization.

144899689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454271.

The product of its digits is 4478976, while the sum is 58.

The square root of 144899689 is about 12037.4286706090. The cubic root of 144899689 is about 525.2376115655.

The spelling of 144899689 in words is "one hundred forty-four million, eight hundred ninety-nine thousand, six hundred eighty-nine".