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2008389 = 3669463
BaseRepresentation
bin111101010010101000101
310210000222210
413222111011
51003232024
6111014033
723033235
oct7522505
93700883
102008389
111151a29
1280a319
135541c6
143a3cc5
1529a129
hex1ea545

2008389 has 4 divisors (see below), whose sum is σ = 2677856. Its totient is φ = 1338924.

The previous prime is 2008379. The next prime is 2008393. The reversal of 2008389 is 9838002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2008389 - 24 = 2008373 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2008309) 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 3 ways as a sum of consecutive naturals, for example, 334729 + ... + 334734.

It is an arithmetic number, because the mean of its divisors is an integer number (669464).

22008389 is an apocalyptic number.

It is an amenable number.

2008389 is a deficient number, since it is larger than the sum of its proper divisors (669467).

2008389 is an equidigital number, since it uses as much as digits as its factorization.

2008389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669466.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2008389 is about 1417.1764180934. The cubic root of 2008389 is about 126.1680172251.

The spelling of 2008389 in words is "two million, eight thousand, three hundred eighty-nine".

Divisors: 1 3 669463 2008389