284473720549 has 4 divisors (see below), whose sum is σ = 286382940300. Its totient is φ = 282564500800.

The previous prime is 284473720547. The next prime is 284473720639. The reversal of 284473720549 is 945027374482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945027374482 = 2 ⋅472513687241.

It can be written as a sum of positive squares in 2 ways, for example, as 13506623524 + 270967097025 = 116218^2 + 520545^2 .

It is a cyclic number.

It is not a de Polignac number, because 284473720549 - 2¹ = 284473720547 is a prime.

It is a super-2 number, since 2×284473720549² (a number of 24 digits) 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 284473720549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284473720541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954609652 + ... + 954609949.

It is an arithmetic number, because the mean of its divisors is an integer number (71595735075).

Almost surely, 2^284473720549 is an apocalyptic number.

It is an amenable number.

284473720549 is a deficient number, since it is larger than the sum of its proper divisors (1909219751).

284473720549 is a wasteful number, since it uses less digits than its factorization.

284473720549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909219750.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 284473720549 in words is "two hundred eighty-four billion, four hundred seventy-three million, seven hundred twenty thousand, five hundred forty-nine".