285214747 has 2 divisors, whose sum is σ = 285214748. Its totient is φ = 285214746.

The previous prime is 285214733. The next prime is 285214777. The reversal of 285214747 is 747412582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285214747 - 2¹¹ = 285212699 is a prime.

It is not a weakly prime, because it can be changed into another prime (285214717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142607373 + 142607374.

It is an arithmetic number, because the mean of its divisors is an integer number (142607374).

Almost surely, 2^285214747 is an apocalyptic number.

285214747 is a deficient number, since it is larger than the sum of its proper divisors (1).

285214747 is an equidigital number, since it uses as much as digits as its factorization.

285214747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125440, while the sum is 40.

The square root of 285214747 is about 16888.3020756972. The cubic root of 285214747 is about 658.2496835161.

The spelling of 285214747 in words is "two hundred eighty-five million, two hundred fourteen thousand, seven hundred forty-seven".