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560389 = 1493761
BaseRepresentation
bin10001000110100000101
31001110201011
42020310011
5120413024
620002221
74522534
oct2106405
91043634
10560389
11353035
12230371
131680bb
1410831b
15b1094
hex88d05

560389 has 4 divisors (see below), whose sum is σ = 564300. Its totient is φ = 556480.

The previous prime is 560353. The next prime is 560393. The reversal of 560389 is 983065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983065 = 5196613.

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 412164 = 385^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 560389 - 29 = 559877 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

560389 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 560389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (560089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732 + ... + 2029.

It is an arithmetic number, because the mean of its divisors is an integer number (141075).

2560389 is an apocalyptic number.

It is an amenable number.

560389 is a deficient number, since it is larger than the sum of its proper divisors (3911).

560389 is a wasteful number, since it uses less digits than its factorization.

560389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 560389 is about 748.5913437918. The cubic root of 560389 is about 82.4447870547. Note that the first 3 decimals are identical.

It can be divided in two parts, 560 and 389, that added together give a palindrome (949).

The spelling of 560389 in words is "five hundred sixty thousand, three hundred eighty-nine".

Divisors: 1 149 3761 560389