847227481 has 2 divisors, whose sum is σ = 847227482. Its totient is φ = 847227480.

The previous prime is 847227463. The next prime is 847227509. The reversal of 847227481 is 184722748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792704025 + 54523456 = 28155^2 + 7384^2 .

It is a cyclic number.

It is not a de Polignac number, because 847227481 - 2⁵ = 847227449 is a prime.

It is a super-2 number, since 2×847227481² = 1435588809123210722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (847227281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423613740 + 423613741.

It is an arithmetic number, because the mean of its divisors is an integer number (423613741).

Almost surely, 2^847227481 is an apocalyptic number.

It is an amenable number.

847227481 is a deficient number, since it is larger than the sum of its proper divisors (1).

847227481 is an equidigital number, since it uses as much as digits as its factorization.

847227481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200704, while the sum is 43.

The square root of 847227481 is about 29107.1723291700. The cubic root of 847227481 is about 946.2371862567.

It can be divided in two parts, 8472 and 27481, that added together give a palindrome (35953).

The spelling of 847227481 in words is "eight hundred forty-seven million, two hundred twenty-seven thousand, four hundred eighty-one".