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389469 = 3197659
BaseRepresentation
bin1011111000101011101
3201210020210
41133011131
544430334
612203033
73211323
oct1370535
9653223
10389469
11246683
12169479
13108372
14a1d13
157a5e9
hex5f15d

389469 has 8 divisors (see below), whose sum is σ = 522720. Its totient is φ = 257936.

The previous prime is 389461. The next prime is 389479. The reversal of 389469 is 964983.

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 389469 - 23 = 389461 is a prime.

It is a super-3 number, since 3×3894693 = 177231103333946127, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389461) 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, 262 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (65340).

2389469 is an apocalyptic number.

It is an amenable number.

389469 is a deficient number, since it is larger than the sum of its proper divisors (133251).

389469 is a wasteful number, since it uses less digits than its factorization.

389469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its digits is 46656, while the sum is 39.

The square root of 389469 is about 624.0745147817. The cubic root of 389469 is about 73.0282620287.

It can be divided in two parts, 389 and 469, that added together give a palindrome (858).

The spelling of 389469 in words is "three hundred eighty-nine thousand, four hundred sixty-nine".

Divisors: 1 3 197 591 659 1977 129823 389469