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144449 = 1729293
BaseRepresentation
bin100011010001000001
321100010222
4203101001
514110244
63032425
71141064
oct432101
9240128
10144449
1199588
126b715
1350996
143a8db
152cbee
hex23441

144449 has 8 divisors (see below), whose sum is σ = 158760. Its totient is φ = 130816.

The previous prime is 144439. The next prime is 144451. The reversal of 144449 is 944441.

It can be divided in two parts, 1444 and 49, that multiplied together give a square (70756 = 2662).

144449 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 78400 + 66049 = 280^2 + 257^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-144449 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144409) 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, 347 + ... + 639.

It is an arithmetic number, because the mean of its divisors is an integer number (19845).

2144449 is an apocalyptic number.

It is an amenable number.

144449 is a deficient number, since it is larger than the sum of its proper divisors (14311).

144449 is a wasteful number, since it uses less digits than its factorization.

144449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

The product of its digits is 2304, while the sum is 26.

The square root of 144449 is about 380.0644682156. The cubic root of 144449 is about 52.4692488092.

The spelling of 144449 in words is "one hundred forty-four thousand, four hundred forty-nine".

Divisors: 1 17 29 293 493 4981 8497 144449