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1444932447 = 3768806307
BaseRepresentation
bin101011000011111…
…1110101101011111
310201200220011200120
41112013332231133
510424400314242
6355213530023
750543503020
oct12607765537
93650804616
101444932447
11681699152
12343aa3913
131a048141a
14d9c8ac47
1586cbd1ec
hex561feb5f

1444932447 has 8 divisors (see below), whose sum is σ = 2201801856. Its totient is φ = 825675672.

The previous prime is 1444932389. The next prime is 1444932487. The reversal of 1444932447 is 7442394441.

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

It is not a de Polignac number, because 1444932447 - 28 = 1444932191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1444932399 and 1444932408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444932487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34403133 + ... + 34403174.

It is an arithmetic number, because the mean of its divisors is an integer number (275225232).

Almost surely, 21444932447 is an apocalyptic number.

1444932447 is a deficient number, since it is larger than the sum of its proper divisors (756869409).

1444932447 is an equidigital number, since it uses as much as digits as its factorization.

1444932447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806317.

The product of its digits is 387072, while the sum is 42.

The square root of 1444932447 is about 38012.2670594638. The cubic root of 1444932447 is about 1130.5311015315.

The spelling of 1444932447 in words is "one billion, four hundred forty-four million, nine hundred thirty-two thousand, four hundred forty-seven".

Divisors: 1 3 7 21 68806307 206418921 481644149 1444932447