144009187 has 12 divisors (see below), whose sum is σ = 174805776. Its totient is φ = 118068720.

The previous prime is 144009161. The next prime is 144009191. The reversal of 144009187 is 781900441.

It is not a de Polignac number, because 144009187 - 2⁷ = 144009059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144009137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62764 + ... + 65017.

It is an arithmetic number, because the mean of its divisors is an integer number (14567148).

Almost surely, 2^144009187 is an apocalyptic number.

144009187 is a deficient number, since it is larger than the sum of its proper divisors (30796589).

144009187 is a wasteful number, since it uses less digits than its factorization.

144009187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127818 (or 127811 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 144009187 is about 12000.3827855615. The cubic root of 144009187 is about 524.1594252488.

The spelling of 144009187 in words is "one hundred forty-four million, nine thousand, one hundred eighty-seven".