284936789 has 4 divisors (see below), whose sum is σ = 285021324. Its totient is φ = 284852256.

The previous prime is 284936777. The next prime is 284936807. The reversal of 284936789 is 987639482.

It is a happy number.

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 276956164 + 7980625 = 16642^2 + 2825^2 .

It is a cyclic number.

It is not a de Polignac number, because 284936789 - 2¹⁶ = 284871253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284936089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36992 + ... + 44025.

It is an arithmetic number, because the mean of its divisors is an integer number (71255331).

Almost surely, 2^284936789 is an apocalyptic number.

It is an amenable number.

284936789 is a deficient number, since it is larger than the sum of its proper divisors (84535).

284936789 is an equidigital number, since it uses as much as digits as its factorization.

284936789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84534.

The product of its digits is 5225472, while the sum is 56.

The square root of 284936789 is about 16880.0707640697. The cubic root of 284936789 is about 658.0357800901.

The spelling of 284936789 in words is "two hundred eighty-four million, nine hundred thirty-six thousand, seven hundred eighty-nine".