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489280971 = 3891832513
BaseRepresentation
bin11101001010011…
…101010111001011
31021002200001022110
4131022131113023
52000223442341
6120314553403
715060551064
oct3512352713
91232601273
10489280971
11231206043
12117a38863
137a4a118a
1448da556b
152ce4c216
hex1d29d5cb

489280971 has 8 divisors (see below), whose sum is σ = 659705040. Its totient is φ = 322522112.

The previous prime is 489280963. The next prime is 489280997. The reversal of 489280971 is 179082984.

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

It is a cyclic number.

It is not a de Polignac number, because 489280971 - 23 = 489280963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489280971.

It is not an unprimeable number, because it can be changed into a prime (489280271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915990 + ... + 916523.

It is an arithmetic number, because the mean of its divisors is an integer number (82463130).

Almost surely, 2489280971 is an apocalyptic number.

489280971 is a deficient number, since it is larger than the sum of its proper divisors (170424069).

489280971 is a wasteful number, since it uses less digits than its factorization.

489280971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832605.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 489280971 is about 22119.6964490926. The cubic root of 489280971 is about 787.9877061607.

The spelling of 489280971 in words is "four hundred eighty-nine million, two hundred eighty thousand, nine hundred seventy-one".

Divisors: 1 3 89 267 1832513 5497539 163093657 489280971