229856287 has 2 divisors, whose sum is σ = 229856288. Its totient is φ = 229856286.

The previous prime is 229856239. The next prime is 229856311. The reversal of 229856287 is 782658922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229856287 - 2²³ = 221467679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 229856287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229856387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114928143 + 114928144.

It is an arithmetic number, because the mean of its divisors is an integer number (114928144).

Almost surely, 2^229856287 is an apocalyptic number.

229856287 is a deficient number, since it is larger than the sum of its proper divisors (1).

229856287 is an equidigital number, since it uses as much as digits as its factorization.

229856287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 229856287 is about 15161.0120704391. The cubic root of 229856287 is about 612.5649295044.

It can be divided in two parts, 2298 and 56287, that added together give a palindrome (58585).

The spelling of 229856287 in words is "two hundred twenty-nine million, eight hundred fifty-six thousand, two hundred eighty-seven".