284912461 has 4 divisors (see below), whose sum is σ = 286992252. Its totient is φ = 282832672.

The previous prime is 284912417. The next prime is 284912491. The reversal of 284912461 is 164219482.

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

It can be written as a sum of positive squares in 2 ways, for example, as 249450436 + 35462025 = 15794^2 + 5955^2 .

It is a cyclic number.

It is not a de Polignac number, because 284912461 - 2¹⁹ = 284388173 is a prime.

It is a super-2 number, since 2×284912461² = 162350220866153042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 284912461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284912491) 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 3 ways as a sum of consecutive naturals, for example, 1039690 + ... + 1039963.

It is an arithmetic number, because the mean of its divisors is an integer number (71748063).

Almost surely, 2^284912461 is an apocalyptic number.

It is an amenable number.

284912461 is a deficient number, since it is larger than the sum of its proper divisors (2079791).

284912461 is a wasteful number, since it uses less digits than its factorization.

284912461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079790.

The product of its digits is 27648, while the sum is 37.

The square root of 284912461 is about 16879.3501355947. The cubic root of 284912461 is about 658.0170517842.

The spelling of 284912461 in words is "two hundred eighty-four million, nine hundred twelve thousand, four hundred sixty-one".