229587857 has 2 divisors, whose sum is σ = 229587858. Its totient is φ = 229587856.

The previous prime is 229587779. The next prime is 229587859. The reversal of 229587857 is 758785922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175403536 + 54184321 = 13244^2 + 7361^2 .

It is a cyclic number.

It is not a de Polignac number, because 229587857 - 2¹⁴ = 229571473 is a prime.

Together with 229587859, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 229587799 and 229587808.

It is not a weakly prime, because it can be changed into another prime (229587859) 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, 114793928 + 114793929.

It is an arithmetic number, because the mean of its divisors is an integer number (114793929).

Almost surely, 2^229587857 is an apocalyptic number.

It is an amenable number.

229587857 is a deficient number, since it is larger than the sum of its proper divisors (1).

229587857 is an equidigital number, since it uses as much as digits as its factorization.

229587857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2822400, while the sum is 53.

The square root of 229587857 is about 15152.1568431692. The cubic root of 229587857 is about 612.3263821116.

The spelling of 229587857 in words is "two hundred twenty-nine million, five hundred eighty-seven thousand, eight hundred fifty-seven".