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144144169 = 1312598807
BaseRepresentation
bin10001001011101…
…11011100101001
3101001020021121221
420211313130221
5243400103134
622145302041
73400130251
oct1045673451
9331207557
10144144169
1174402714
1240334921
1323b2b710
1415202961
15c9c45b4
hex8977729

144144169 has 8 divisors (see below), whose sum is σ = 155373120. Its totient is φ = 132935376.

The previous prime is 144144149. The next prime is 144144179. The reversal of 144144169 is 961441441.

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 144144169 - 25 = 144144137 is a prime.

It is a super-2 number, since 2×1441441692 = 41555082913401122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144144149) 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, 11964 + ... + 20770.

It is an arithmetic number, because the mean of its divisors is an integer number (19421640).

Almost surely, 2144144169 is an apocalyptic number.

It is an amenable number.

144144169 is a deficient number, since it is larger than the sum of its proper divisors (11228951).

144144169 is a wasteful number, since it uses less digits than its factorization.

144144169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10079.

The product of its digits is 13824, while the sum is 34.

The square root of 144144169 is about 12006.0055388959. The cubic root of 144144169 is about 524.3231416404.

The spelling of 144144169 in words is "one hundred forty-four million, one hundred forty-four thousand, one hundred sixty-nine".

Divisors: 1 13 1259 8807 16367 114491 11088013 144144169