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144488329 = 1091325581
BaseRepresentation
bin10001001110010…
…11011110001001
3101001212202201121
420213023132021
5243442111304
622200515241
73403062526
oct1047133611
9331782647
10144488329
1174618247
124047bb21
1323c1c26b
141529214d
15ca41554
hex89cb789

144488329 has 4 divisors (see below), whose sum is σ = 145814020. Its totient is φ = 143162640.

The previous prime is 144488317. The next prime is 144488341. The reversal of 144488329 is 923884441.

144488329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923884441 = 6883134227.

It is an interprime number because it is at equal distance from previous prime (144488317) and next prime (144488341).

It can be written as a sum of positive squares in 2 ways, for example, as 87516025 + 56972304 = 9355^2 + 7548^2 .

It is a cyclic number.

It is not a de Polignac number, because 144488329 - 223 = 136099721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144488359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662682 + ... + 662899.

It is an arithmetic number, because the mean of its divisors is an integer number (36453505).

Almost surely, 2144488329 is an apocalyptic number.

It is an amenable number.

144488329 is a deficient number, since it is larger than the sum of its proper divisors (1325691).

144488329 is a wasteful number, since it uses less digits than its factorization.

144488329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325690.

The product of its digits is 221184, while the sum is 43.

The square root of 144488329 is about 12020.3298207662. The cubic root of 144488329 is about 524.7401029561.

The spelling of 144488329 in words is "one hundred forty-four million, four hundred eighty-eight thousand, three hundred twenty-nine".

Divisors: 1 109 1325581 144488329