229749857 has 2 divisors, whose sum is σ = 229749858. Its totient is φ = 229749856.

The previous prime is 229749847. The next prime is 229749869. The reversal of 229749857 is 758947922.

229749857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226924096 + 2825761 = 15064^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 229749857 - 2⁸ = 229749601 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 229749799 and 229749808.

It is not a weakly prime, because it can be changed into another prime (229749847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114874928 + 114874929.

It is an arithmetic number, because the mean of its divisors is an integer number (114874929).

Almost surely, 2^229749857 is an apocalyptic number.

It is an amenable number.

229749857 is a deficient number, since it is larger than the sum of its proper divisors (1).

229749857 is an equidigital number, since it uses as much as digits as its factorization.

229749857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 229749857 is about 15157.5016740886. The cubic root of 229749857 is about 612.4703699119.

The spelling of 229749857 in words is "two hundred twenty-nine million, seven hundred forty-nine thousand, eight hundred fifty-seven".