144217187 has 8 divisors (see below), whose sum is σ = 147121920. Its totient is φ = 141319360.

The previous prime is 144217147. The next prime is 144217211. The reversal of 144217187 is 781712441.

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 144217187 - 2⁶ = 144217123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144217147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67262 + ... + 69372.

It is an arithmetic number, because the mean of its divisors is an integer number (18390240).

Almost surely, 2^144217187 is an apocalyptic number.

144217187 is a deficient number, since it is larger than the sum of its proper divisors (2904733).

144217187 is a wasteful number, since it uses less digits than its factorization.

144217187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453.

The product of its digits is 12544, while the sum is 35.

The square root of 144217187 is about 12009.0460487084. The cubic root of 144217187 is about 524.4116608053.

The spelling of 144217187 in words is "one hundred forty-four million, two hundred seventeen thousand, one hundred eighty-seven".