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489924471 = 31271285891
BaseRepresentation
bin11101001100111…
…010011101110111
31021010212202000210
4131030322131313
52000410040341
6120340440503
715066201141
oct3514723567
91233782023
10489924471
11231605563
121180a9133
137a66804a
14490d1c91
152d027c16
hex1d33a777

489924471 has 8 divisors (see below), whose sum is σ = 658376704. Its totient is φ = 324044280.

The previous prime is 489924469. The next prime is 489924473. The reversal of 489924471 is 174429984.

It is an interprime number because it is at equal distance from previous prime (489924469) and next prime (489924473).

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

It is not a de Polignac number, because 489924471 - 21 = 489924469 is a prime.

It is a super-4 number, since 4×4899244714 (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

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 489924471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489924473) 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, 642565 + ... + 643326.

It is an arithmetic number, because the mean of its divisors is an integer number (82297088).

Almost surely, 2489924471 is an apocalyptic number.

489924471 is a deficient number, since it is larger than the sum of its proper divisors (168452233).

489924471 is a wasteful number, since it uses less digits than its factorization.

489924471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286021.

The product of its digits is 580608, while the sum is 48.

The square root of 489924471 is about 22134.2375292216. The cubic root of 489924471 is about 788.3330073833. Note that the first 3 decimals are identical.

The spelling of 489924471 in words is "four hundred eighty-nine million, nine hundred twenty-four thousand, four hundred seventy-one".

Divisors: 1 3 127 381 1285891 3857673 163308157 489924471