284873969 has 2 divisors, whose sum is σ = 284873970. Its totient is φ = 284873968.

The previous prime is 284873951. The next prime is 284873971. The reversal of 284873969 is 969378482.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211993600 + 72880369 = 14560^2 + 8537^2 .

It is a cyclic number.

It is not a de Polignac number, because 284873969 - 2⁸ = 284873713 is a prime.

It is a super-2 number, since 2×284873969² = 162306356427625922, which contains 22 as substring.

Together with 284873971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (284573969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142436984 + 142436985.

It is an arithmetic number, because the mean of its divisors is an integer number (142436985).

Almost surely, 2^284873969 is an apocalyptic number.

It is an amenable number.

284873969 is a deficient number, since it is larger than the sum of its proper divisors (1).

284873969 is an equidigital number, since it uses as much as digits as its factorization.

284873969 is an evil number, because the sum of its binary digits is even.

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

The square root of 284873969 is about 16878.2098873074. The cubic root of 284873969 is about 657.9874174970.

The spelling of 284873969 in words is "two hundred eighty-four million, eight hundred seventy-three thousand, nine hundred sixty-nine".