229921547689 has 4 divisors (see below), whose sum is σ = 237338371840. Its totient is φ = 222504723540.

The previous prime is 229921547683. The next prime is 229921547701. The reversal of 229921547689 is 986745129922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 229921547689 - 2²³ = 229913159081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229921547689.

It is not an unprimeable number, because it can be changed into a prime (229921547683) 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 in 3 ways as a sum of consecutive naturals, for example, 3708412029 + ... + 3708412090.

It is an arithmetic number, because the mean of its divisors is an integer number (59334592960).

Almost surely, 2^229921547689 is an apocalyptic number.

It is an amenable number.

229921547689 is a deficient number, since it is larger than the sum of its proper divisors (7416824151).

229921547689 is an equidigital number, since it uses as much as digits as its factorization.

229921547689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416824150.

The product of its digits is 39191040, while the sum is 64.

The spelling of 229921547689 in words is "two hundred twenty-nine billion, nine hundred twenty-one million, five hundred forty-seven thousand, six hundred eighty-nine".