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389983 = 113293
BaseRepresentation
bin1011111001101011111
3201210221211
41133031133
544434413
612205251
73212656
oct1371537
9653854
10389983
11247000
12169827
13108679
14a219d
157a83d
hex5f35f

389983 has 8 divisors (see below), whose sum is σ = 430416. Its totient is φ = 353320.

The previous prime is 389981. The next prime is 389989.

389983 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 389983 - 21 = 389981 is a prime.

It is a Duffinian number.

389983 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389981) 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, 1185 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (53802).

2389983 is an apocalyptic number.

389983 is a deficient number, since it is larger than the sum of its proper divisors (40433).

389983 is an equidigital number, since it uses as much as digits as its factorization.

389983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 304 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 389983 is about 624.4861887984. The cubic root of 389983 is about 73.0603741488.

The spelling of 389983 in words is "three hundred eighty-nine thousand, nine hundred eighty-three".

Divisors: 1 11 121 293 1331 3223 35453 389983