284785147 has 2 divisors, whose sum is σ = 284785148. Its totient is φ = 284785146.

The previous prime is 284785117. The next prime is 284785169. The reversal of 284785147 is 741587482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 284785147 - 2¹⁵ = 284752379 is a prime.

It is a super-2 number, since 2×284785147² = 162205159903623218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 284785097 and 284785106.

It is not a weakly prime, because it can be changed into another prime (284785117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142392573 + 142392574.

It is an arithmetic number, because the mean of its divisors is an integer number (142392574).

Almost surely, 2^284785147 is an apocalyptic number.

284785147 is a deficient number, since it is larger than the sum of its proper divisors (1).

284785147 is an equidigital number, since it uses as much as digits as its factorization.

284785147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 501760, while the sum is 46.

The square root of 284785147 is about 16875.5784197165. The cubic root of 284785147 is about 657.9190248743.

The spelling of 284785147 in words is "two hundred eighty-four million, seven hundred eighty-five thousand, one hundred forty-seven".