284378047 has 2 divisors, whose sum is σ = 284378048. Its totient is φ = 284378046.

The previous prime is 284378033. The next prime is 284378063. The reversal of 284378047 is 740873482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284378047 - 2¹¹ = 284375999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 284377994 and 284378012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284378027) 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 as a sum of consecutive naturals, namely, 142189023 + 142189024.

It is an arithmetic number, because the mean of its divisors is an integer number (142189024).

Almost surely, 2^284378047 is an apocalyptic number.

284378047 is a deficient number, since it is larger than the sum of its proper divisors (1).

284378047 is an equidigital number, since it uses as much as digits as its factorization.

284378047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 284378047 is about 16863.5122972648. The cubic root of 284378047 is about 657.6053772416.

The spelling of 284378047 in words is "two hundred eighty-four million, three hundred seventy-eight thousand, forty-seven".