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444444445 = 5251354139
BaseRepresentation
bin11010011111011…
…010111100011101
31010222022010011101
4122133122330131
51402234210240
6112033553101
714004500254
oct3237327435
91128263141
10444444445
11208971765
12104a15791
13711030a3
144305379b
152904239a
hex1a7daf1d

444444445 has 8 divisors (see below), whose sum is σ = 535459680. Its totient is φ = 354138000.

The previous prime is 444444443. The next prime is 444444457. The reversal of 444444445 is 544444444.

Adding to 444444445 its reverse (544444444), we get a palindrome (988888889).

Subtracting 444444445 from its reverse (544444444), we obtain a palindrome (99999999).

It can be divided in two parts, 444444 and 445, that added together give a square (444889 = 6672).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 444444445 - 21 = 444444443 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444444443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175815 + ... + 178324.

It is an arithmetic number, because the mean of its divisors is an integer number (66932460).

Almost surely, 2444444445 is an apocalyptic number.

It is an amenable number.

444444445 is a deficient number, since it is larger than the sum of its proper divisors (91015235).

444444445 is a wasteful number, since it uses less digits than its factorization.

444444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354395.

The product of its digits is 327680, while the sum is 37.

The square root of 444444445 is about 21081.8510809654. The cubic root of 444444445 is about 763.1428286869.

The spelling of 444444445 in words is "four hundred forty-four million, four hundred forty-four thousand, four hundred forty-five".

Divisors: 1 5 251 1255 354139 1770695 88888889 444444445