[go: up one dir, main page]

Search a number
-
+
130489 is a prime number
BaseRepresentation
bin11111110110111001
320121222221
4133312321
513133424
62444041
71052302
oct376671
9217887
10130489
118a047
1263621
1347518
14357a9
15289e4
hex1fdb9

130489 has 2 divisors, whose sum is σ = 130490. Its totient is φ = 130488.

The previous prime is 130483. The next prime is 130513. The reversal of 130489 is 984031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110889 + 19600 = 333^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 130489 - 25 = 130457 is a prime.

It is not a weakly prime, because it can be changed into another prime (130483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65244 + 65245.

It is an arithmetic number, because the mean of its divisors is an integer number (65245).

2130489 is an apocalyptic number.

It is an amenable number.

130489 is a deficient number, since it is larger than the sum of its proper divisors (1).

130489 is an equidigital number, since it uses as much as digits as its factorization.

130489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 130489 is about 361.2326120383. The cubic root of 130489 is about 50.7214080172.

The spelling of 130489 in words is "one hundred thirty thousand, four hundred eighty-nine".