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44440405 = 556315787
BaseRepresentation
bin1010100110000…
…1101101010101
310002121210202221
42221201231111
542334043110
64224302341
71046510602
oct251415525
9102553687
1044440405
11230a3809
1212a719b1
13928c9c9
145c8b6a9
153d7c7da
hex2a61b55

44440405 has 8 divisors (see below), whose sum is σ = 53426592. Its totient is φ = 35486928.

The previous prime is 44440379. The next prime is 44440469. The reversal of 44440405 is 50404444.

44440405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-44440405 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44440405.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5079 + ... + 10708.

It is an arithmetic number, because the mean of its divisors is an integer number (6678324).

Almost surely, 244440405 is an apocalyptic number.

It is an amenable number.

44440405 is a deficient number, since it is larger than the sum of its proper divisors (8986187).

44440405 is a wasteful number, since it uses less digits than its factorization.

44440405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16355.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 44440405 is about 6666.3637014492. The cubic root of 44440405 is about 354.2087913601.

Adding to 44440405 its reverse (50404444), we get a palindrome (94844849).

The spelling of 44440405 in words is "forty-four million, four hundred forty thousand, four hundred five".

Divisors: 1 5 563 2815 15787 78935 8888081 44440405