144220189 has 8 divisors (see below), whose sum is σ = 151873920. Its totient is φ = 136681776.

The previous prime is 144220171. The next prime is 144220199. The reversal of 144220189 is 981022441.

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 144220189 - 2⁵ = 144220157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144220189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144220169) 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, 26257 + ... + 31270.

It is an arithmetic number, because the mean of its divisors is an integer number (18984240).

Almost surely, 2^144220189 is an apocalyptic number.

It is an amenable number.

144220189 is a deficient number, since it is larger than the sum of its proper divisors (7653731).

144220189 is a wasteful number, since it uses less digits than its factorization.

144220189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57659.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 144220189 is about 12009.1710371699. The cubic root of 144220189 is about 524.4152994675.

The spelling of 144220189 in words is "one hundred forty-four million, two hundred twenty thousand, one hundred eighty-nine".