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444513 = 3148171
BaseRepresentation
bin1101100100001100001
3211120202110
41230201201
5103211023
613305533
73530646
oct1544141
9746673
10444513
11283a73
121952a9
13127434
14b7dcd
158ba93
hex6c861

444513 has 4 divisors (see below), whose sum is σ = 592688. Its totient is φ = 296340.

The previous prime is 444487. The next prime is 444517. The reversal of 444513 is 315444.

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 444513 - 26 = 444449 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444513.

It is not an unprimeable number, because it can be changed into a prime (444517) 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, 74083 + ... + 74088.

It is an arithmetic number, because the mean of its divisors is an integer number (148172).

2444513 is an apocalyptic number.

It is an amenable number.

444513 is a deficient number, since it is larger than the sum of its proper divisors (148175).

444513 is a wasteful number, since it uses less digits than its factorization.

444513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148174.

The product of its digits is 960, while the sum is 21.

The square root of 444513 is about 666.7180813507. The cubic root of 444513 is about 76.3182064612.

Adding to 444513 its reverse (315444), we get a palindrome (759957).

The spelling of 444513 in words is "four hundred forty-four thousand, five hundred thirteen".

Divisors: 1 3 148171 444513