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1384903 = 13106531
BaseRepresentation
bin101010010000111000111
32121100201201
411102013013
5323304103
645403331
714525422
oct5220707
92540651
101384903
11866553
12569547
13396490
142809b9
151c551d
hex1521c7

1384903 has 4 divisors (see below), whose sum is σ = 1491448. Its totient is φ = 1278360.

The previous prime is 1384879. The next prime is 1384909. The reversal of 1384903 is 3094831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3094831 = 12172543.

It is a cyclic number.

It is not a de Polignac number, because 1384903 - 29 = 1384391 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384909) 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, 53253 + ... + 53278.

It is an arithmetic number, because the mean of its divisors is an integer number (372862).

21384903 is an apocalyptic number.

1384903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1384903 is a deficient number, since it is larger than the sum of its proper divisors (106545).

1384903 is a wasteful number, since it uses less digits than its factorization.

1384903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106544.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1384903 is about 1176.8190175214. The cubic root of 1384903 is about 111.4653246689.

It can be divided in two parts, 138 and 4903, that added together give a square (5041 = 712).

The spelling of 1384903 in words is "one million, three hundred eighty-four thousand, nine hundred three".

Divisors: 1 13 106531 1384903