Search a number
-
+
286469 is a prime number
BaseRepresentation
bin1000101111100000101
3112112221222
41011330011
533131334
610050125
72302121
oct1057405
9475858
10286469
11186257
12119945
13a0511
1476581
1559d2e
hex45f05

286469 has 2 divisors, whose sum is σ = 286470. Its totient is φ = 286468.

The previous prime is 286459. The next prime is 286477. The reversal of 286469 is 964682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172225 + 114244 = 415^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 286469 - 24 = 286453 is a prime.

It is a super-2 number, since 2×2864692 = 164128975922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286469.

It is not a weakly prime, because it can be changed into another prime (286459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143234 + 143235.

It is an arithmetic number, because the mean of its divisors is an integer number (143235).

2286469 is an apocalyptic number.

It is an amenable number.

286469 is a deficient number, since it is larger than the sum of its proper divisors (1).

286469 is an equidigital number, since it uses as much as digits as its factorization.

286469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 286469 is about 535.2279888048. The cubic root of 286469 is about 65.9213173153.

The spelling of 286469 in words is "two hundred eighty-six thousand, four hundred sixty-nine".