288791227 has 2 divisors, whose sum is σ = 288791228. Its totient is φ = 288791226.

The previous prime is 288791207. The next prime is 288791267. The reversal of 288791227 is 722197882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 288791227 - 2¹⁹ = 288266939 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (288791207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144395613 + 144395614.

It is an arithmetic number, because the mean of its divisors is an integer number (144395614).

Almost surely, 2^288791227 is an apocalyptic number.

288791227 is a deficient number, since it is larger than the sum of its proper divisors (1).

288791227 is an equidigital number, since it uses as much as digits as its factorization.

288791227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 46.

The square root of 288791227 is about 16993.8585082965. The cubic root of 288791227 is about 660.9896592961.

The spelling of 288791227 in words is "two hundred eighty-eight million, seven hundred ninety-one thousand, two hundred twenty-seven".