229688047 has 2 divisors, whose sum is σ = 229688048. Its totient is φ = 229688046.

The previous prime is 229688029. The next prime is 229688057. The reversal of 229688047 is 740886922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229688047 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 229687988 and 229688006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229688057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114844023 + 114844024.

It is an arithmetic number, because the mean of its divisors is an integer number (114844024).

Almost surely, 2^229688047 is an apocalyptic number.

229688047 is a deficient number, since it is larger than the sum of its proper divisors (1).

229688047 is an equidigital number, since it uses as much as digits as its factorization.

229688047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 229688047 is about 15155.4626125368. The cubic root of 229688047 is about 612.4154403326.

The spelling of 229688047 in words is "two hundred twenty-nine million, six hundred eighty-eight thousand, forty-seven".