229185647 has 2 divisors, whose sum is σ = 229185648. Its totient is φ = 229185646.

The previous prime is 229185643. The next prime is 229185673. The reversal of 229185647 is 746581922.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229185647 - 2² = 229185643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 229185598 and 229185607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229185643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114592823 + 114592824.

It is an arithmetic number, because the mean of its divisors is an integer number (114592824).

Almost surely, 2^229185647 is an apocalyptic number.

229185647 is a deficient number, since it is larger than the sum of its proper divisors (1).

229185647 is an equidigital number, since it uses as much as digits as its factorization.

229185647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 229185647 is about 15138.8786572850. The cubic root of 229185647 is about 611.9685993188.

The spelling of 229185647 in words is "two hundred twenty-nine million, one hundred eighty-five thousand, six hundred forty-seven".