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487389471 = 3315240747
BaseRepresentation
bin11101000011001…
…111100100011111
31020222002221122220
4131003033210133
51444232430341
6120210240423
715035512362
oct3503174437
91228087586
10487389471
11230133a18
12117286113
1379c8b24a
1448a320d9
152cbc6a66
hex1d0cf91f

487389471 has 8 divisors (see below), whose sum is σ = 670815744. Its totient is φ = 314444760.

The previous prime is 487389443. The next prime is 487389479. The reversal of 487389471 is 174983784.

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

It is not a de Polignac number, because 487389471 - 217 = 487258399 is a prime.

It is a super-3 number, since 3×4873894713 (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487389479) 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, 2620281 + ... + 2620466.

It is an arithmetic number, because the mean of its divisors is an integer number (83851968).

Almost surely, 2487389471 is an apocalyptic number.

487389471 is a deficient number, since it is larger than the sum of its proper divisors (183426273).

487389471 is a wasteful number, since it uses less digits than its factorization.

487389471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240781.

The product of its digits is 1354752, while the sum is 51.

The square root of 487389471 is about 22076.8990349641. The cubic root of 487389471 is about 786.9709736903.

The spelling of 487389471 in words is "four hundred eighty-seven million, three hundred eighty-nine thousand, four hundred seventy-one".

Divisors: 1 3 31 93 5240747 15722241 162463157 487389471