144689217 has 8 divisors (see below), whose sum is σ = 193060224. Its totient is φ = 96388848.

The previous prime is 144689191. The next prime is 144689219. The reversal of 144689217 is 712986441.

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

It is not a de Polignac number, because 144689217 - 2¹⁴ = 144672833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144689219) 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, 12678 + ... + 21215.

It is an arithmetic number, because the mean of its divisors is an integer number (24132528).

Almost surely, 2^144689217 is an apocalyptic number.

It is an amenable number.

144689217 is a deficient number, since it is larger than the sum of its proper divisors (48371007).

144689217 is a wasteful number, since it uses less digits than its factorization.

144689217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35319.

The product of its digits is 96768, while the sum is 42.

The square root of 144689217 is about 12028.6830950025. The cubic root of 144689217 is about 524.9831795064.

The spelling of 144689217 in words is "one hundred forty-four million, six hundred eighty-nine thousand, two hundred seventeen".