144493789 has 8 divisors (see below), whose sum is σ = 157891680. Its totient is φ = 131139600.

The previous prime is 144493771. The next prime is 144493801. The reversal of 144493789 is 987394441.

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 144493789 - 2²³ = 136105181 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144493729) 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, 3802 + ... + 17419.

It is an arithmetic number, because the mean of its divisors is an integer number (19736460).

Almost surely, 2^144493789 is an apocalyptic number.

It is an amenable number.

144493789 is a deficient number, since it is larger than the sum of its proper divisors (13397891).

144493789 is a wasteful number, since it uses less digits than its factorization.

144493789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21851.

The product of its digits is 870912, while the sum is 49.

The square root of 144493789 is about 12020.5569338529. The cubic root of 144493789 is about 524.7467125900.

The spelling of 144493789 in words is "one hundred forty-four million, four hundred ninety-three thousand, seven hundred eighty-nine".