144487909 has 8 divisors (see below), whose sum is σ = 151320960. Its totient is φ = 137700816.

The previous prime is 144487907. The next prime is 144487921. The reversal of 144487909 is 909784441.

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

It is not a de Polignac number, because 144487909 - 2¹ = 144487907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144487901) 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, 4969 + ... + 17710.

It is an arithmetic number, because the mean of its divisors is an integer number (18915120).

Almost surely, 2^144487909 is an apocalyptic number.

It is an amenable number.

144487909 is a deficient number, since it is larger than the sum of its proper divisors (6833051).

144487909 is a wasteful number, since it uses less digits than its factorization.

144487909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22979.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 144487909 is about 12020.3123503510. The cubic root of 144487909 is about 524.7395945159.

The spelling of 144487909 in words is "one hundred forty-four million, four hundred eighty-seven thousand, nine hundred nine".