214644009 has 4 divisors (see below), whose sum is σ = 286192016. Its totient is φ = 143096004.

The previous prime is 214643983. The next prime is 214644013. The reversal of 214644009 is 900446412.

214644009 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 not a de Polignac number, because 214644009 - 2⁸ = 214643753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214644029) 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, 35773999 + ... + 35774004.

It is an arithmetic number, because the mean of its divisors is an integer number (71548004).

Almost surely, 2^214644009 is an apocalyptic number.

It is an amenable number.

214644009 is a deficient number, since it is larger than the sum of its proper divisors (71548007).

214644009 is an equidigital number, since it uses as much as digits as its factorization.

214644009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71548006.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 214644009 is about 14650.7340771717. The cubic root of 214644009 is about 598.7418162447.

The spelling of 214644009 in words is "two hundred fourteen million, six hundred forty-four thousand, nine".