229216009 has 4 divisors (see below), whose sum is σ = 250053840. Its totient is φ = 208378180.

The previous prime is 229215989. The next prime is 229216027. The reversal of 229216009 is 900612922.

229216009 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 229216009 - 2⁵ = 229215977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229216079) 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, 10418899 + ... + 10418920.

It is an arithmetic number, because the mean of its divisors is an integer number (62513460).

Almost surely, 2^229216009 is an apocalyptic number.

It is an amenable number.

229216009 is a deficient number, since it is larger than the sum of its proper divisors (20837831).

229216009 is a wasteful number, since it uses less digits than its factorization.

229216009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20837830.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 229216009 is about 15139.8814064047. The cubic root of 229216009 is about 611.9956222009.

The spelling of 229216009 in words is "two hundred twenty-nine million, two hundred sixteen thousand, nine".