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349385 = 569877
BaseRepresentation
bin1010101010011001001
3122202021012
41111103021
542140020
611253305
72653421
oct1252311
9582235
10349385
11219553
1214a235
13c304a
1491481
156d7c5
hex554c9

349385 has 4 divisors (see below), whose sum is σ = 419268. Its totient is φ = 279504.

The previous prime is 349381. The next prime is 349387. The reversal of 349385 is 583943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583943 = 2412423.

It can be written as a sum of positive squares in 2 ways, for example, as 50176 + 299209 = 224^2 + 547^2 .

It is a cyclic number.

It is not a de Polignac number, because 349385 - 22 = 349381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349381) 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, 34934 + ... + 34943.

It is an arithmetic number, because the mean of its divisors is an integer number (104817).

2349385 is an apocalyptic number.

It is an amenable number.

349385 is a deficient number, since it is larger than the sum of its proper divisors (69883).

349385 is an equidigital number, since it uses as much as digits as its factorization.

349385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69882.

The product of its digits is 12960, while the sum is 32.

The square root of 349385 is about 591.0879799150. The cubic root of 349385 is about 70.4316860850.

It can be divided in two parts, 34938 and 5, that added together give a palindrome (34943).

The spelling of 349385 in words is "three hundred forty-nine thousand, three hundred eighty-five".

Divisors: 1 5 69877 349385