229616641 has 4 divisors (see below), whose sum is σ = 230084784. Its totient is φ = 229148500.

The previous prime is 229616623. The next prime is 229616663. The reversal of 229616641 is 146616922.

229616641 = 424² + 425² + ... + 914².

229616641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 229616641 - 2⁹ = 229616129 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 229616641.

It is not an unprimeable number, because it can be changed into a prime (229616341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233335 + ... + 234316.

It is an arithmetic number, because the mean of its divisors is an integer number (57521196).

Almost surely, 2^229616641 is an apocalyptic number.

It is an amenable number.

229616641 is a deficient number, since it is larger than the sum of its proper divisors (468143).

229616641 is an equidigital number, since it uses as much as digits as its factorization.

229616641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468142.

The product of its digits is 31104, while the sum is 37.

The square root of 229616641 is about 15153.1066451735. The cubic root of 229616641 is about 612.3519706688.

The spelling of 229616641 in words is "two hundred twenty-nine million, six hundred sixteen thousand, six hundred forty-one".