Search a number
-
+
47489 = 132281
BaseRepresentation
bin1011100110000001
32102010212
423212001
53004424
61003505
7255311
oct134601
972125
1047489
1132752
1223595
1318800
1413441
15e10e
hexb981

47489 has 6 divisors (see below), whose sum is σ = 51606. Its totient is φ = 43680.

The previous prime is 47459. The next prime is 47491. The reversal of 47489 is 98474.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 400 + 47089 = 20^2 + 217^2 .

It is a de Polignac number, because none of the positive numbers 2k-47489 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47489.

It is not an unprimeable number, because it can be changed into a prime (47419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29 + ... + 309.

It is an arithmetic number, because the mean of its divisors is an integer number (8601).

247489 is an apocalyptic number.

It is an amenable number.

47489 is a deficient number, since it is larger than the sum of its proper divisors (4117).

47489 is a wasteful number, since it uses less digits than its factorization.

47489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 294 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 47489 is about 217.9197099851. The cubic root of 47489 is about 36.2129863971.

The spelling of 47489 in words is "forty-seven thousand, four hundred eighty-nine".

Divisors: 1 13 169 281 3653 47489