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4987471 = 8956039
BaseRepresentation
bin10011000001101001001111
3100101101112011
4103001221033
52234044341
6254522051
760251506
oct23015117
910341464
104987471
1128a7185
121806327
131058188
1493b83d
15687b81
hex4c1a4f

4987471 has 4 divisors (see below), whose sum is σ = 5043600. Its totient is φ = 4931344.

The previous prime is 4987457. The next prime is 4987501. The reversal of 4987471 is 1747894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4987471 - 25 = 4987439 is a prime.

It is a super-3 number, since 3×49874713 (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4987271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27931 + ... + 28108.

It is an arithmetic number, because the mean of its divisors is an integer number (1260900).

Almost surely, 24987471 is an apocalyptic number.

4987471 is a deficient number, since it is larger than the sum of its proper divisors (56129).

4987471 is an equidigital number, since it uses as much as digits as its factorization.

4987471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56128.

The product of its digits is 56448, while the sum is 40.

The square root of 4987471 is about 2233.2646506852. The cubic root of 4987471 is about 170.8546466104.

The spelling of 4987471 in words is "four million, nine hundred eighty-seven thousand, four hundred seventy-one".

Divisors: 1 89 56039 4987471