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389349 = 3243261
BaseRepresentation
bin1011111000011100101
3201210002100
41133003211
544424344
612202313
73211062
oct1370345
9653070
10389349
11246584
12169399
131082ac
14a1c69
157a569
hex5f0e5

389349 has 6 divisors (see below), whose sum is σ = 562406. Its totient is φ = 259560.

The previous prime is 389303. The next prime is 389357. The reversal of 389349 is 943983.

It can be written as a sum of positive squares in only one way, i.e., 338724 + 50625 = 582^2 + 225^2 .

It is not a de Polignac number, because 389349 - 29 = 388837 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389349.

It is not an unprimeable number, because it can be changed into a prime (389369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21622 + ... + 21639.

2389349 is an apocalyptic number.

It is an amenable number.

389349 is a deficient number, since it is larger than the sum of its proper divisors (173057).

389349 is a wasteful number, since it uses less digits than its factorization.

389349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43267 (or 43264 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 389349 is about 623.9783650096. The cubic root of 389349 is about 73.0207609682.

The spelling of 389349 in words is "three hundred eighty-nine thousand, three hundred forty-nine".

Divisors: 1 3 9 43261 129783 389349