229047857 has 2 divisors, whose sum is σ = 229047858. Its totient is φ = 229047856.

The previous prime is 229047827. The next prime is 229047859. The reversal of 229047857 is 758740922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228735376 + 312481 = 15124^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 229047857 - 2¹² = 229043761 is a prime.

Together with 229047859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229047859) 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, 114523928 + 114523929.

It is an arithmetic number, because the mean of its divisors is an integer number (114523929).

Almost surely, 2^229047857 is an apocalyptic number.

It is an amenable number.

229047857 is a deficient number, since it is larger than the sum of its proper divisors (1).

229047857 is an equidigital number, since it uses as much as digits as its factorization.

229047857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 229047857 is about 15134.3271076054. The cubic root of 229047857 is about 611.8459330307.

The spelling of 229047857 in words is "two hundred twenty-nine million, forty-seven thousand, eight hundred fifty-seven".