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14440747 = 17878081
BaseRepresentation
bin110111000101…
…100100101011
31000011122222111
4313011210223
512144100442
61233303151
7233513206
oct67054453
930148874
1014440747
118173602
124a04ab7
132cb7c29
141cbc93d
151403b17
hexdc592b

14440747 has 4 divisors (see below), whose sum is σ = 14450616. Its totient is φ = 14430880.

The previous prime is 14440739. The next prime is 14440771. The reversal of 14440747 is 74704441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74704441 = 710672063.

It is a cyclic number.

It is not a de Polignac number, because 14440747 - 23 = 14440739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14440717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254 + ... + 5827.

It is an arithmetic number, because the mean of its divisors is an integer number (3612654).

Almost surely, 214440747 is an apocalyptic number.

14440747 is a deficient number, since it is larger than the sum of its proper divisors (9869).

14440747 is an equidigital number, since it uses as much as digits as its factorization.

14440747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868.

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 14440747 is about 3800.0982882026. The cubic root of 14440747 is about 243.5173373160.

The spelling of 14440747 in words is "fourteen million, four hundred forty thousand, seven hundred forty-seven".

Divisors: 1 1787 8081 14440747